Midway Atoll: Two weeks at the largest albatross colony in the world

By Rachael Orben, Postdoctoral Scholar, Seabird Oceanography Lab & Geospatial Ecology of Marine Megafauna Lab, Oregon State University

In January I was extremely lucky to accompany my former PhD advisor, Scott Shaffer to Midway Atoll National Wildlife Refuge in the Papahānaumokuākea Marine National Monument as part of my job as a postdoc working in Rob Suryan’s Seabird Oceanography LabWe were there with the dual purpose of GPS tracking Laysan and Black-footed albatrosses as part of Scott’s long-term research and to collect fine-scale data on flight behavior to develop collision risk models for wind energy development (in other areas of the species ranges such as Oregon). Here are my impressions of this amazing island.

So many albatrosses! Our approximately four hour flight from Honolulu to Midway landed at night and as we stood around on the dark tarmac greeting the human island residents I could just make out the ghostly glistening outlines of albatrosses by moonlight. But I had to wait until the following morning to really take stock of where I had suddenly landed: Midway Atoll, the largest albatross colony in the world. This was my first trip to the Northwestern Hawaiian Islands, but I have been to other albatross colonies before and Midway is most definitely different.

First of all, it was hot(ish)!

Secondly, I was amazed to see albatrosses nesting everywhere. Unlike the southern hemisphere colonies I have visited, the albatrosses aren’t restricted to their section of the island or even nesting as close to each other as possible. Instead there are nests literally everywhere there might be enough loose substrate! Birds nest in the middle of the roads, in the bike racks (bikes are an easy quick means of transportation), along the paths, next to the extremely loud generator, near piles of old equipment, and around buildings. Hawaiian albatross nests are not much to look at compared to the mud pedestal nests of the southern hemisphere mollymawks (see the photos below) and are often made of just enough sand and vegetation to keep the egg in place. There are no aerial predators of these birds, beyond the occasional vagrant peregrine, and certainly nothing that might rival the tenacity of the skuas in the southern hemisphere. Perhaps it is this naiveté that has lead to their willingness to nest anywhere.

It may also be this naiveté that has facilitated the following unfortunate turn of events. Just before I arrived, the USFWS and a crew of volunteers had just finished up the annual albatross count. During their counting sweeps they noticed injured adults incubating eggs. After setting out trail cams, suspicions were confirmed. The introduced mice on Midway have discovered that albatrosses are a source of food. House mice are known to prey on albatross chicks on Gough and Marion Islands in the South Atlantic (more information here – warning graphic photos), but to my knowledge this is the first time that they have started eating adult birds. You can read the USFWS announcement here. The plane that I flew out on brought in people, traps, and resources to deal with the situation, but stay tuned as I fear this saga is just beginning.

Finally, and on a further less than positive note, I went to Midway fully aware of the problem that plastics pose to these birds and our marine ecosystem, but there is something to be said for seeing it first hand. The chicks were very small when I was there so I didn’t see any direct impacts on them, but see below for photos of carcasses of last year’s fledglings with plastic filled stomachs. Instead, it was the shear amount of random plastic bits strewn around the island and buried layers deep into the sand that struck me. I learned that sometimes the plastic bits are glow-in-the-dark! Sometimes fishing lures have batteries in them – I am not sure what they are used to catch – do you know? And toothbrushes are very common. All of the plastic that I saw among the birds arrived in the stomach of an adult albatross. All-in-all the experience gave me renewed inspiration for continuing to reduce the amount of plastic that I use (click here for more information on albatrosses and plastic, and here and here for info on marine plastic pollution in general). I collected interesting pieces to bring home with me (see the photos below), but it is a non-random sampling of what caught my eye. I left many many plastic shards where they were.

I have written mostly about the birds, but Midway is full of human history. As I biked along the runway, or past the old officer quarters, I often found myself wondering what all these albatrosses have seen over the years and what they might witness in the future. Two weeks was really just a blink-of-an-eye for an albatross that can live over 40 years (or longer like Wisdom the albatross). I was terribly sad to leave such a beautiful place, but I came home with amazing memories, photos, and gigabytes of data that are already giving me a glimpse into the world of albatrosses at sea.

Recap: 2nd World Seabird Conference

By Rachael Orben, post-doc

I have just returned home from attending the 2nd World Seabird Conference held in Cape Town, South Africa. My bags are still only half unpacked as I roll back into the work world of emails, planning field-work, report writing and data analysis. I am still very jet-lagged and the cool crisp Oregon air feels strange after so recently being in the dry heat of Africa. And here comes the rain! (Oh, and should I mention that bit of sickness that always seems to creep up behind you when you travel?)

The conference was a 4-day affair that filled my days from 8:30 am until sometime after 8:30 pm. Talks, poster sessions, and a really great Early Career Scientist evening – the organizers did an excellent job squeezing so much in. Of course a conference also involves visiting with colleagues and networking….and with roughly 600 conference participants from 53 countries, I had my work cut out trying to catch up with friends and colleagues! It was amazing to have so many seabird researchers and so much seabird science in one place.

So with all the science going on, what did I learn? Well, seabird scientists have certainly embraced the use of small electronic devices in the form of GPS loggers and GLS loggers (geolocation loggers that use light levels to calculate approximate locations – think sailors and celestial navigation). To give you a taste, follow this link to a short article on BirdLife’s Global Seabird Tracking Database.

BirdLife International: 5 million data points for the world's seabirds provided by 120 research institutes (www.seabirdtracking.org)
BirdLife International: 5 million data points for the world’s seabirds provided by 120 research institutes (www.seabirdtracking.org)

This is really just the beginning, and the exciting thing is seabird scientists are getting into the more nuanced questions of seabird spatial ecology. How do birds navigate at sea? Where do non-breeding birds forage? Where do fledglings go? Do birds return to the same places to forage (spatial fidelity), both when they constrained to their breeding colonies and while on migrations? How does this change through an individual’s lifetime? Why do some individuals in a population return to the same foraging locations while others don’t? As it turns out, though the ocean might appear featureless to us, seabirds know where they are at-sea and are able to return to the same places to forage – which they do depending on all sorts of things including what species they are, predictability of prey, individual personality, and likely a few more things.

Seabird conservation was also a large and pervasive theme. However, I can’t really do the entire conference justice here. So check out #WSC2 on twitter for the posts. You can go back in time and get a flavor for many of the talks as there are 1000s of tweets!

You might ask – what is the value of traveling half way around the world to talk about seabirds? And indeed there is much discussion about the carbon cost of scientific conferences. I am not saying the WSC is the perfect model, but it does have one thing in its favour as a newly established conference: It’s infrequent occurrence. The first World Seabird Conference was held in Victoria, Canada in 2010 and the next one will happen in 2020. I wonder how seabird science will change over the next five years?!

To stay globally connected in the meantime Seabirders are experimenting with on-line conferences. I participated in the first one, held on Twitter, and I really enjoyed it and learned a lot. You too can check it out at #WSTC1 and stay tuned for #WSTC2.

After the conference I took a break from seabirds and went to explore the terrestrial world of South Africa with my parents. It was a wonderful trip and I am so glad my parents came and joined me!

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