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Doreen Chaussadas | The Urban Ibis Project

@doreenbirds

PhD candidate in ecology, mixing community science, genetics, physiology, conservation and animal behavior to understand adaptation in urban White Ibises. Did you see my tagged ibises? Report them here: https://forms.gle/aNMyRCexTdWsrgc19 πŸ³οΈβ€πŸŒˆπŸ‡«πŸ‡·

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30.06.2025
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Latest posts by Doreen Chaussadas | The Urban Ibis Project @doreenbirds

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So honored to have received the Best 15 Minutes Presentation award at the Integrative Conservation Conference. I don't always think of myself as a conversationist and don't always feel valid attending these meetings, so this was a surprise!

02.03.2026 19:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
CORVIDATA: A global dataset of morphology, ecology, sociality, and life-history in Corvidae - Scientific Data Scientific Data - CORVIDATA: A global dataset of morphology, ecology, sociality, and life-history in Corvidae

If you work on corvid ecology, behaviour, cognition, or conservation, this might be useful for you πŸ‘‡
I’ve just published CORVIDATA in Scientific Data 🐦
doi.org/10.1038/s415... (1/4)

06.01.2026 10:40 πŸ‘ 72 πŸ” 55 πŸ’¬ 2 πŸ“Œ 1

How dare they!

08.01.2026 00:33 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you! They really are, what a wonderful specie <3

06.01.2026 19:07 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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It's such a privilege to get to spend my days looking at what my tagged birds do when confronted to this strange box. I am getting to know them I catch myself look at ibis A and think "you remind me of ibis B". I am excited to quantify how their individual traits impact how they treat the puzzle!

05.01.2026 03:03 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Directly from the field: watch this ibis figure out how to solve our automated puzzle box

03.01.2026 03:05 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
City smart: Are cities making birds smarter? One cannot go to Florida and miss the White Ibises roaming golf, park and private lawns. But how does a swamp-loving ibis become a city bird? We’re testing whether urban ibises are cleverer than their...

Please share share share! I launched a crowdfunding for my project, I need your help!
Note: if you become a backer, you will be notified with bonus avian encounters at the parks! Wanna see spoonbills, cranes and bald eagles? Even a tiny donation will help me <3 experiment.com/projects/cit...

30.12.2025 23:49 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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A good start of the field season, deployment successful, ibises are interested in the puzzle! We still have some adjustments to make but hopefully we will get started on the actual data collection very shortly!

12.12.2025 02:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very excited to announce that I will be presenting my work for the Urban Ibis Project at the #BOU2026 @bou.org.uk along with great researchers who have directly inspired my research. See you there !

11.11.2025 21:13 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Fascinating!! Also a topic that has been on my mind for a while. In fact, I will be deploying puzzle boxes to test problem-solving in urban and non-urban flocks of ibises this winter. It took a couple years to develop my boxes, I am excited to see if we can find similar patterns in our birds!

08.11.2025 17:20 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Spooky Month-ed so hard I became a candidate, Yay!

31.10.2025 16:39 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Preliminary results on our ibis community structure based off citizen science data is here!
What we see is that communities are quite distinct from one another, although there seem to be some individuals that bridge them together! Given how many ibises there are, it was lucky for us to detect that!

24.10.2025 17:29 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Small urban colonies HAVE established but we did not know who was using them. Now it looks like they may be used by some individuals that have dropped their yearly migration when they urbanized. That is not surprising, but it is cool to see it happen!

04.09.2025 14:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I had been told that ibises traditionally migrate to vast Everglades colonies to breed. Even when they winter in urban parks!

But this map suggests some urban birds may now complete their entire breeding cycle in urban habitats.

04.09.2025 14:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The idea started with a paper indicating that bill color in american White Ibises is a good predictor for breeding state:

πŸ”΄ Bright red = breeding ready
⬛ Black patches = eggs laid/chicks hatched

With each shift in color, we can track the ibis life cycleβ€”no nest disturbance required.

04.09.2025 14:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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πŸͺΆ New map, new questions: I am making an attempt at using community scientists' photos to link movement with breeding status. Here is what I am learning so far:

04.09.2025 14:01 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

and apply that transformation to patches taken from their bill. It has been helpful but I did have to go a bit further and normalize brightness and saturation as well. I have also been measuring the proportion of their bill that is black.

21.08.2025 16:33 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I have ran into issues since all photos are taken using different devices and under different light conditions. But I have taken advantage of ibise's white plumage to normalize their color. Very simply, I look at how white is their white, turn that into actual white (R255, G255, B255)

21.08.2025 16:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

As their nesting progresses, eggs are laid and chicks grow up, their bill slowly develops and black patch and slowly becomes duller. Thus, how their bills look tell us a lot about their breeding activities! I have been working on using community scientists' photos to estimate breeding state.

21.08.2025 16:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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That's where the community scientists' submissions come into play: likely because of their asynchronous breeding, ibises have developed a mean to communicate to potential partners about their status. Individuals that are ready to mingle develop a vivid red bill.

21.08.2025 16:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

We do see a stark reduction in urban ibis populations at their urban "wintering" grounds in the summer, but they're not necessarily all gone. Plus some urban colonies have started emerging, which bids the question: do these urban breeders stick around urban parks in the summer?

21.08.2025 16:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

For instance, a big factor that explains movement and distribution is whether or not they are currently BREEDING. Ibises presumably have a long breeding season (march-october though we'll get back to that later). When they do, they are thought to join big colonies in the Everglades (2/n)

21.08.2025 16:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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How Scavengers Keep the Ecosystem Clean | Roundglass | Sustain Vultures and other scavengers not only clear decaying animal corpses, protecting us from disease, but their absence could also destabilise entire ecosystems

Sharing an article I wrote about vertebrate scavengers, the topic of my Master's thesis. I worked in Madhya Pradesh in Central India, studying vertebrate scavenger communities in two different protected areas - one with an abundance of vulture, one without.
roundglasssustain.com/wild-vault/s...

19.07.2025 19:18 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
A golden jackal faces down white-rumped vultures in Kanha National Park, India

A golden jackal faces down white-rumped vultures in Kanha National Park, India

The first two pages of an article titled "Beyond Boundaries: Reimagining Wildlife Tourism in India" by Bhavya Iyer in the April 2024 issue of Sanctuary Asia magazine.

The first two pages of an article titled "Beyond Boundaries: Reimagining Wildlife Tourism in India" by Bhavya Iyer in the April 2024 issue of Sanctuary Asia magazine.

touching moss

touching moss

Hey #ecology bluesky! I'm Bhavya, a PhD student interested in spatial ecology + people's values towards nature. I'm a wildlife biologist, birder, and nature writer! I mostly like to write about my travels+research.
#science #nature

10.07.2025 16:35 πŸ‘ 10 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
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To your left, what a White Ibis wing typically looks like: white feathers with black tip only for the last primaries. To your right, a special individual captured last winter. We captured over 500 birds for this project over almost 2 decades and had never seen that! #ornithology #birds #biodiversity

05.08.2025 15:02 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Starting a VERY low-budget community science project on White Ibises was a bold move considering the scale of their movement, but it paid off! All of our sightings outside of capture sites came from community scientists, who found our birds as far as Orlando and Tampa!

21.07.2025 21:21 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Hi all! I'm Aoife, a plant lover+ PhD candidate in the Anthropology and Integrative Conservation Program at UGA. I work with farmers in the Colombian Amazon to explore synergies between shifting agriculture, livelihoods, and biodiversity conservation.

What's your favorite plant? 🌲

30.06.2025 20:13 πŸ‘ 4 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
photo of a white ibis standing in a lawn and carrying a yellow wing tag showing the number 055 written in balck

photo of a white ibis standing in a lawn and carrying a yellow wing tag showing the number 055 written in balck

Hi! I am Doreen, a PhD student working on urban adaptation in White Ibises. My studies incorporate genetics, conservation, behavior, and a community science project that involves many passionate birders! Have you seen my tagged ibises? Use the link in bio to report your sighting!
pic:Neelya Eiram

30.06.2025 20:09 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0