United States

**Abstract:**

The African Penguin population in South Africa has decreased by 42% since the species was listed as Endangered in 2010. The main driver of this decrease is poor food availability due to shifting forage fish distributions and fishery competition. Sardine and anchovy, the penguins&#39; preferred prey, have shifted eastwards along the southern coast of South Africa, creating a mismatch between the current distribution of fish and penguin historical breeding localities. Establishing new or re-establishing extinct seabird colonies has been used as a successful conservation intervention to restore seabird populations for a number of species. Several techniques have been developed including social attraction and translocation of chicks. Most projects have involved flying seabirds with very few focusing on penguins. Establishing new colonies for African Penguins Spheniscus demersus in South Africa has been identified as an action to improve the status of this species by addressing the mismatch between the distributions of breeding areas and prey. Work has begun to re-establish a breeding colony at the De Hoop Nature Reserve, South Africa, an area of high fish abundance. Penguins attempted to breed in the area in 2003 but the colony was abandoned by 2006 due to high levels of predation. A predator-proof fence has been constructed, and decoys and call playback installed. We present progress towards re-establishing the colony and the planning for the second phase which will include chick translocation. We discuss the challenges of implementing novel conservation interventions, as well as practical challenges of working in protected areas and managing native predator impacts. Given these long-term management challenges for mainland colonies, we also investigate the feasibility of an creating artificial island breeding habitat.

**Authors:**

Christina Hagen¹, Alistair McInnes¹, Ross Wanless², Lauren Waller³, Kevin Shaw⁴

¹BirdLife South Africa, ²National Taiwan Ocean University, ³Southern African Foundation for the Conservation of Coastal Birds, ⁴CapeNature

3rd World Seabird Conference

Progress towards re-estabishment of an African Penguin colony in South Africa

Welcome Seabirders!  

Welcome to Virtual World Seabird Conference 3 - vWSC3! Whether you are in your office or lab, at home, in a coffee shop or bar poaching some wifi, or at a remote field site or research vessel – we are very excited to welcome you to the third ever World Seabird Conference. 

We would like to thank ALL of you for being so patient as WSC3 was scheduled, postponed, rescheduled, revised to virtual, and scheduled again. Throughout all those iterations there was one message that remained perfectly clear – seabirders were eager to meet and share their science. If we could not meet in person then virtual it would have to be, but a 3rd WSC was something everyone wanted. That support and commitment helped the WSU Board of Directors and Member Societies sort through all of the challenges they faced to plan and hold this conference. 

The list of those that need to be thanked is long and, while we plan on recognizing many during the live closing plenary, it is important to do so here in writing as well. 

The Australasian Seabird Group was our Local Host for our plan to meet in Hobart, Tasmania. They invested substantial time and effort to find venues and plan events that we unfortunately were not able to visit. Nonetheless we appreciate their work on behalf of WSC3 and encourage all of you to thank them when you see their members in Gathertown or elsewhere during our virtual meeting. Their willingness to host created the initial excitement for WSC3 and without that our vWSC would not have been possible.

We also wish to thank the Science Program Committee, the Virtual Committee, and the Early Career Scientist Committee for their hard work planning the logistics, events, and schedule for vWSC3. These committees also had to deal with changing parameters and short timelines that made what is always a challenging task even more challenging. The Travel Awards Committee also invested time and effort in developing procedures for awarding travel funds that ultimately would not be implemented. 

Our ability to shift from an in-person to a virtual meeting, and to do so in a way that would be financially feasible, was due to the effective efforts of The International Fundraising Committee and to our financial sponsors. The IFC raised funds to support WSC3 and then, through the good relationships they built with sponsors, ensured we could re-envision how those funds could be used to support a virtual conference that would be affordable and high-quality.

We all owe the WSU Board of Directors and the Representatives of the Member Societies a great deal of thanks. They are the ones who manage the WSU and, for the past 18 months, have had to have a series of challenging meetings and conversations, have had to make a series of difficult choices, have had to do all of that while considering the short- and long-term health of WSU and the World Seabird Conferences, and did this while also managing their own challenges at their day jobs. We are grateful for their diligence, patience, foresight, and throughout all of the meetings, their collegiality. Also – a 6-year term is quite a commitment!

There would not be a WSC3 without a successful WSC1 and WSC2. Thanks go to the Pacific Seabird Group for their support of WSC1 in Victoria, Canada, and to the African Seabird Group for their support of WSC2 in Cape Town, South Africa. In each of these endeavors and for our current conference we were fortunate to work with a dependable and trustworthy partner in Podium Conferences. Michelle Smith and Marischal de Armond have become valued members of our team and have not only helped us plan conferences but have assisted and advised the WSU Chairs and Board on issues above and beyond conference planning. 

As we embark on our vWSC3 week we extend to all of you our thanks for showing up, for being patient, and most importantly for the work you do with seabirds. We are all part of a unique, global community that shares an interest, a fascination, and a passion for birds that make a living in our world’s oceans. We have advanced the science, conservation, and management of seabirds as well the ecosystems they inhabit. We are consistently impressed and motivated by the work you do. 

The WSU formed in 2010 because we saw the need for a global organization to address challenges at a global level. Over the past 11 years WSU has grown, adapted, and evolved to become the community that this week is making vWSC3 a reality. Enjoy the week, appreciate and support the friends and colleagues you have made in the community, and if you see us in a virtual hallway please stop and say hello! 

Thank you for the opportunity to serve all of you and the WSU over the past few years,

Nicholas Carlile, Interim Chair, WSU<br>
Patrick Jodice, 2nd Chair of the WSU<br><br>

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Join us for four days of science, networking and virtual engagement with delegates from around the world!

**Abstract:**

The African Penguin population in South Africa has decreased by 42% since the species was listed as Endangered in 2010. The main driver of this decrease is poor food availability due to shifting forage fish distributions and fishery competition. Sardine and anchovy, the penguins' preferred prey, have shifted eastwards along the southern coast of South Africa, creating a mismatch between the current distribution of fish and penguin historical breeding localities. Establishing new or re-establishing extinct seabird colonies has been used as a successful conservation intervention to restore seabird populations for a number of species. Several techniques have been developed including social attraction and translocation of chicks. Most projects have involved flying seabirds with very few focusing on penguins. Establishing new colonies for African Penguins Spheniscus demersus in South Africa has been identified as an action to improve the status of this species by addressing the mismatch between the distributions of breeding areas and prey. Work has begun to re-establish a breeding colony at the De Hoop Nature Reserve, South Africa, an area of high fish abundance. Penguins attempted to breed in the area in 2003 but the colony was abandoned by 2006 due to high levels of predation. A predator-proof fence has been constructed, and decoys and call playback installed. We present progress towards re-establishing the colony and the planning for the second phase which will include chick translocation. We discuss the challenges of implementing novel conservation interventions, as well as practical challenges of working in protected areas and managing native predator impacts. Given these long-term management challenges for mainland colonies, we also investigate the feasibility of an creating artificial island breeding habitat.

**Authors:**

Christina Hagen¹, Alistair McInnes¹, Ross Wanless², Lauren Waller³, Kevin Shaw⁴

¹BirdLife South Africa, ²National Taiwan Ocean University, ³Southern African Foundation for the Conservation of Coastal Birds, ⁴CapeNature

symposium

**Abstract:**

Arctic seabirds evolved physiological and morphological adaptation to cold that increases heat production and reduces heat loss. Yet such adaptation might expose them to increased mortality risk from heat stress in a rapidly warming Arctic. When ambient air temperature exceeds the upper critical limit of the thermoneutral zone of an individual, evaporative water loss must increase to dissipate heat and to avoid lethally high body temperatures. At the same time, endogenous heat production also increases as more active forms of evaporative water loss (i.e. gular fluttering) are employed to dissipate heat. If environmental temperatures remain elevated above thermoneutrality, the cycle of increased water loss and heat production can quickly lead to dehydration and hyperthermia. In the present study, we used temperature-controlled respirometry and biotelemetry to link the thermal sensitivity of energy expenditure, water loss and body temperature with behavioural responses to environmental temperature in 50 little auks (Alle alle) from East Greenland. These measurements performed across a wide temperature range (5 to 32°C) allowed us to examine how the magnitude and frequency of heat stress events impact the most abundant seabird in the Arctic. Little auks showed a remarkable capacity to cope with air temperatures 25°C above current maximum temperatures when at rest. Yet individuals may need to reduce activity levels to avoid hyperthermia on warmer days, which could reduce foraging effort, parental care, social activities and predator avoidance. Our study highlights a need to understand the ecological consequences of thermoregulatory constraints on the behaviour and survival of cold-adapted seabirds. Little auks are ecosystem engineers that facilitate an enormous transfer of nutrients from marine to terrestrial ecosystems. Hence, physiological constraints on the behaviour of little auks may have flow on effects for entire marine and terrestrial food webs in the Arctic.

**Authors:**

Julian Beaman¹, Craig White¹, Manon Clairbaux², Samuel Perret², Jérôme Fort³, David Grémillet²

¹Monash University, ²CNRS ? Université de Montpellier ? Université Paul-Valéry Montpellier ? EPHE, ³CNRS ? Université de La Rochelle

Does physiological adaptation to cold predispose little auks (Alle alle) to increased risk of hyperthermia in a warming Arctic?

**Abstract:**

Procellariform seabirds (petrels, shearwaters) are the world's most threatened bird group, particularly in New Zealand, where 90% of our seabirds are at risk. As could be expected, reversing this trend is of significant conservation interest for New Zealand. Key to achieving this is understanding the effects of environmental conditions on breeding seabirds, with more agile monitoring methods desperately needed. To this end, mechanistic and integrative monitoring approaches are providing high resolution information with much quicker turnaround times c.f. annual demographic studies. By incorporating endocrinology, haematology, Hidden Markov modelling (HMM), and stable isotope analyses, resource managers are able to identify colonies that are potentially vulnerable in the absence of overt and established monitoring signals i.e. chick rearing failure. For example, establishing new colonies via translocation of seabird chicks is currently used for many species, but colony location is critical i.e. establishing colonies far from feeding grounds is counterproductive. Using GPS tracked common diving petrels (Pelecanoides urinatrix) breeding in the Hauraki Gulf we hypothesised that 1) there were physiological limits as to how far from feeding grounds colonies could be established; and 2) due to distance from feeding grounds, inner Gulf colonies would show higher stress (CORT), and spend more time commuting rather than foraging. However, CORT profiles were more affected by breeding stage (highest in chick rearing) than colony location. Moreover, HMM analyses and stable isotopes showed inner Gulf birds foraged locally but spent more effort chasing higher trophic prey (fish/cephalopods). Such ecophysiological insights demonstrate that, providing sufficient fish cephalopod prey exist, planned translocations of diving petrels further into the Gulf can occur, thus offering a new tool to arrest the decline of this species within the region.

**Authors:**

Brendon Dunphy¹, Shae Vickers², Edin Whitehead¹, Jingjing Zhang¹, Todd Landers³, Sarah Bury⁴, Matt Rayner⁵

¹The University of Auckland, ²The Ministry of Primary Industries, ³Auckland Council, ⁴National Institute of Water and Atmospheric Research, ⁵Auckland War Memorial museum

Conservation physiology of seabirds: integrative assessments to guide colony translocations.

**Abstract:**

Seabirds are some of nature's greatest navigators, often traversing tens of thousands of kilometers a year over visually sparse terrain. The mechanisms by which this is achieved are, however, frustratingly elusive. In songbirds we know that long-distance movement is partly underpinned by an ability to sense the Earth's magnetic field, though outside of this clade evidence for magnetoreception is sparse and, in some instances, highly equivocal. There is, then, considerable interest in understanding a) whether seabirds use the Earth's magnetic field to navigate and b) if so, how? Here, we use historic ringing data to investigate whether Manx shearwaters (Puffinus puffinus) use magnetic cues when relocating their natal site following first migration. Using slight (but measurable) changes in the Earth's magnetic field, we find that changes in latitude between ringing and recovery are predicted by changes in the inclination of the Earth's magnetic field. We find that small changes in inclination between when a bird fledges and when it returns from first migration correlate with probabilistic changes in latitude at recruitment, in doing so quantitatively fulfilling a priori predictions as to the magnitude and direction of latitudinal shift. This, we believe, suggests that a) natal magnetic inclination is learnt prior to fledging and b) is used to provide latitudinal information when making the first return trip from the wintering grounds.

**Authors:**

Joe Wynn¹

¹University of Oxford

Magnetoreception in seabirds

**Abstract:**

The ability of individuals and populations to adapt to a changing climate is a key determinant of population dynamics. While changes in mean behaviour are well studied, changes in trait variance have been largely ignored, despite being assumed to be crucial for adapting to a changing environment. As the ability to acquire resources is essential to both reproduction and survival, changes in behaviours that maximize resource acquisition should be under selection. Here, using foraging trip duration data collected over 7 years on black-browed albatrosses (Thalassarche melanophris) on the Kerguelen Islands in the southern Indian Ocean, we examined the importance of changes in the mean and variance in foraging behaviour, and the associated effects on fitness, in response to the El Niño Southern Oscillation (ENSO). Using double hierarchical models, we found no evidence that individuals change their mean foraging trip duration in response to a changing environment, but found strong evidence of changes in variance. Younger birds showed greater variability in foraging trip duration in poor conditions as did birds with higher fitness. However, during brooding, birds showed greater variability in foraging behaviour under good conditions, suggesting that optimal conditions allow the alteration between chick provisioning and self-maintenance trips. We found weak correlations between sea surface temperature and the ENSO, but stronger links with sea-level pressure. We suggest that variability in behavioural traits affecting resource acquisition is under selection and offers a mechanism by which individuals can adapt to a changing climate. Studies which look only at effects on mean behaviour may underestimate the effects of climate change and fail to consider variance in traits as a key evolutionary force.

**Authors:**

Samantha Patrick¹, Julien Martin², Caroline Ummenhofer³, Alexandre Corbeau⁴, Henri Weimerskirch⁴

¹University of Liverpool, ²University of Ottawa, ³WHOI, ⁴CEBC-CNRS

Does personality mediate the reproductive consequences of broad-scale climate phenomena?

**Abstract:**

Competition for high quality breeding sites in colonial seabird species is often intense, such that individuals may invest considerable time in site occupancy even outside of the breeding season. The site defence hypothesis predicts that site occupancy should be positively correlated with breeding phenology and success such that more successful sites are occupied earlier and/or more frequently. However, few studies have related non-breeding season attendance and subsequent breeding performance. Therefore, our understanding of the potential life-history benefits of this behaviour are limited. To address this, we used time-lapse photography to record the non-breeding attendance of >80 pairs of common guillemots, Uria aalge, breeding on the Isle of May, Scotland. Images were taken of sites every 15 minutes for three non-breeding seasons (start of October to end of March). We then recorded the time spent at each site, each day, each non-breeding season. We then followed breeding phenology and success at each site in the subsequent breeding season. Attendance at sites began in late October with sites gradually be attended more frequently and for longer until almost all sites were occupied for all daylight hours just prior to the breeding season (end March). We found that higher quality sites were occupied earlier and more often. Sites occupied more often had significantly earlier lay dates, and those occupied earlier were more successful, supporting the site defence hypothesis. These clear effects of non-breeding attendance on breeding timing and success highlight the potential fitness benefits of this behaviour on key life-history processes such a breeding.

**Authors:**

Sophie Bennett¹, Mike Harris¹, Sarah Wanless¹, Jonathan Green², Mark Newell¹, Kate Searle¹, Francis Daunt¹

¹UK Centre for Ecology & Hydrology, ²University of Liverpool

Colony attendance of common guillemots during the non-breeding season

**Abstract:**

Albatross are typically regarded as adapted to almost effortless aerial travel, with morphology and physiology facilitating an extreme ocean-wandering lifestyle but restricting their effectiveness below water to shallow dives at most. While few in number, depth recorder studies of albatross are consistent with this notion, suggesting that as a group they are very shallow divers, with about 7m the record diving depth of any species. However, informal observations of submergence times for BBA (Catry per obs) suggested that, in a Falklands population of this species at least, the picture may be more complex. We therefore conducted precision combined telemetry deployments (depth recorder, accelerometer, GPS) on BBA breeding on New Island in the western Falkands to investigate the details of foraging behaviour. In a sample of 27 breeding birds on foraging excursions during brood guard we found that the mean maximum diving depth was, surprisingly, around 11.2 m, with every individual diving to at least 2.9 m, 15 individuals diving > 10 m, and the single maximum dive depth recorded at around 20 m. Deeper dives were correspondingly long in duration, with a mean max submergence of about 50 seconds. These deep dives are relatively rare occurrences, but are widespread across individuals and show significant bottom-time features suggesting active pursuit of prey. Our findings suggest that the diving physiology of albatross may need to be reconsidered.

**Authors:**

Tim Guilford¹, Oliver Padget¹, Louise Maurice², Paulo Catry³

¹Oxford University, ²British Geological Survey, ³ISPA ? Instituto Universitário

Widespread but infrequent deep diving in a mollymawk albatross

**Abstract:**

Marine ecosystems are complex, with interconnected natural and anthropogenic drivers influencing spatiotemporal patterns of marine predators. Resource availability is a key factor driving seabird movement and distribution, but information on prey availability is difficult to obtain at useful scales for understanding predator ecology. By using new techniques for estimating prey availability from digital aerial survey data, which capture the location and size of surface-level forage fish shoals, and estimating forage fish occupancy from bottom trawl survey data, we have new methods to describe prey availability for seabirds. This study explores links between seabirds and prey availability by examining Northern Gannets (Morus bassanus) movement in the U.S. Atlantic during the non-breeding season. Using satellite telemetry data from adult and juvenile Northern Gannets (n=75), we employed hidden Markov models to examine behavior states in relation to forage fish availability and environmental covariates. Here, we tested the importance of four types of environmental covariates: static (e.g., depth), dynamic (e.g., sea surface temperature), frontal (e.g., sea surfaced temperature fronts), and behavior-modulating (e.g., wind speed) in Northern Gannet transitions between behavioral states (resident and transiting). Our results suggest that static and dynamic environmental variables played significant roles in movement behavior, with chlorophyll a and depth influencing transitions between resident and transiting states. While frontal features were not as important overall, sea surface temperature fronts specifically played a role in facilitating behavioral transitions. While we expect many of these environmental covariates to be related to forage fish availability, the next step is to use the forage fish occupancy and availability estimates to determine if they improve our understanding of Northern Gannet behavior. Disentangling trophic relationships is critical to understanding the mechanisms driving seabird behavior and space use, particularly in ecosystems that are rapidly changing due to climate and energy development.

**Authors:**

Julia Gulka¹, Evan Adams¹, Alicia Berlin², Kevin Friedland³, Andrew Gilbert¹, Chandra Goetsch¹, William Montevecchi⁴, Matthew Perry², Iain Stenhouse¹, Kate Williams¹

¹Biodiversity Research Institute, ²U.S. Geological Survey, Patuxent Wildlife Research Center, ³National Marine Fisheries Service, ⁴Memorial University

Assessing trophic links, individual movement, and habitat use of non-breeding Northern Gannets

**Abstract:**

Small marine radars have been used for many years to study birds, bats, and insects. Though almost all of these studies have been terrestrial, radar has a number of compelling advantages as a method for studying seabirds, especially at colonies. Marine radars are inexpensive and robust, and can be set up to record automatically. Radar can detect and track both aggregations and individual birds with high resolution, and can operate in darkness and fog. It does not require telemetry devices, and can thus track the movements of an entire population rather than a small number of tagged animals. Despite these advantages, monitoring seabird colonies with radar involves a number of challenges. The detection range is limited to a few km, and radar reflections from the sea surface are a persistent source of interference and false detections. In general, species identification is not possible from radar data alone. And while it is possible to track hundreds of birds at once with a single radar, the data processing involved is non-trivial. I will present techniques and lessons learned from a radar study of a common tern (Sterna hirundo) colony in New York, USA in 2014-15, illustrating the challenges and capabilities of radar monitoring in this context. I will also discuss future possibilities for this technology, including both technological developments and applications for science and conservation. Despite their limitations, radars provide a view of seabird behavior unavailable with other technologies, and can play a unique and important role in the future of seabird ecology.

**Authors:**

Samuel Urmy¹

¹Stony Brook University

Monitoring colonial seabirds with commercial marine radars

**Abstract:**

Background. Humboldt penguin (Sphenisuc humboldti) is consider as a protected species worldwide and also in Peru. Anthropic activities can alter the behavior of penguins at physiological and hormonal levels, and can cause negative effects during their breeding season. In this research, the objectives were to examine the differences between the behavior of penguin in relation with the marine anthropic activities, and to analyze the alert and flushed behavior in relation with the distance approach and with the size group. Methods. Two islands on the center of the Peruvian coast were visited in 2018 -2019 during the non-breeding season of Humboldt penguins. Marine anthropic activities test considers the type of marine activity (jet ski, kayak, compressor-diving, tourism boat, fishing with string), the approach distance (20, 30, 50, 80 and 100 m) and the group size. The behavioral response of penguins was categorized in non-reacting, alert and flushed. Results. The type of marine anthropic activity, the approach distance and their interaction had influence on the behavior of the Humboldt penguins. Jet ski and compressor-diving were the most disturbing activities with 80 % and 15 % of reactions registered from 100 m away the colony respectively, while kayak and fishing with string were less disturbing. At distances of 50 m away, all activities caused more than 50 % of reactions. Conclusion. This study shows the relation between the distance approach and the percentage of reactions of alert and flushed of Humboldt penguins. Different anthropic activities can cause different reactions. It´s important to analyze the context on each reproductive site of Humboldt penguin to have a better management of the marine area.

**Authors:**

Cinthia Irigoin-Lovera¹, Maite Arangüena Proaño¹, Diego Gonzales-Del Carpio¹, Carlos Zavalaga Reyes¹

¹Universidad Cientifica del Sur

The effect of marine anthropic activities on the behavior of Humboldt penguin (Spheniscus humboldti) in two guano islands of Peru

**Abstract:**

Methods for creating new and restored seabird colonies are now standard practice worldwide. In many situations, however, ongoing management becomes necessary because of recurring threats. Such projects are dependent on funding strategies that can keep pace with rising costs. We review the costs and opportunities associated with 'Project Puffin', one of the oldest seabird restoration programs in the world. This project began at one Maine island in 1973. Over its 48-year history, the original focus of restoring Atlantic Puffins to one island, grew to include seven Maine islands and 23 waterbird species. Since 2002, the number of islands and managed species have remained similar, though breeding numbers have increased at all sites. Sustaining such long-term projects creates invaluable data and trains many early career biologists. However, the annual costs of managing these restored populations increased more than threefold, from 450,000 USD in 2002 to 1.6M USD in 2019. To meet these increased costs, the program created partnerships with federal and state agencies and with other nonprofits. It has also increased the number of donors and mean size of donations. To attract new supporters and provide public outreach, the program initiated puffin watching ecotourism (no landing) at the first restored puffin colony. The number of boat tour visitors increased from 4,600 in 2002 to more than 10,500 in 2019. Each year an additional 8,000 people learn about seabirds at Project Puffin Visitor Center and remote puffin cams expose millions more to the program. These outreach programs have helped build a growing number of followers, many of whom have become advocates for seabird conservation. While the United States is notable for generous philanthropy and puffins are especially compelling, we believe that an entrepreneurial approach incorporating outreach has application to other seabird restoration programs requiring ongoing management.

**Authors:**

Stephen Kress¹, Don Lyons², Tiffany Huenefeldt²

¹1945, ²National Audubon Society

Progress towards re-estabishment of an African Penguin colony in South Africa

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Does physiological adaptation to cold predispose little auks (Alle alle) to increased risk of hyperthermia in a warming Arctic?

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Progress in Establishing a New Breeding Colony of the Newell's Shearwater on the Island of Maui

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