Grackles are amazing. This is aqua purple standing on top of a tower waiting for me to set up the test so he can do a bunch of trials in his reversal learning task

I trained them to come to the towers and wait for me when they are ready to be tested. Sometimes it takes me 5 minutes to set up the test and they just stand there waiting

What I love is that they tell me when they want to do tests and we both understand what the other wants. These are wild birds who willingly (and eagerly!) participate in behavioral choice tests, even when they get frustrated when the rules change (that is part of the test)

#TheGrackleProject #ManyIndividuals

Fieldwork simplifies bird identification: the bird on the left is "not a grackle", the bird in the middle is "not a grackle", as is the bird on the right #TheGrackleProject

For actual ID's see alt text.

I started Aqua Purple’s behavioral observations a few weeks ago and it has been difficult to follow him for long periods of time.

Why? He is a magician! One second, I see him under a car in the parking lot. The next second, he has vanished 🪄 into thin air. I search 🔍 for several minutes, but usually can’t refind him. Where did he go? 👀

When I am able to keep him in sight, he is quite the buffet bird - he goes back and forth through the parking lots finding food along the way.

When he finds a piece of food, he likes to eat lots of it before moving on.

And he is big on napping 💤 - loves his naps under cars 🚗 or in a palm 🌴
#TheGrackleProject #ManyIndividuals

Aqua Aqua also remembers the feeders we use for testing - I started habituating the new grackles to the test feeder this week and Aqua Aqua came running over to get some free food. He was a bit hesitant to take a piece of food from the feeder tray at first, but he warmed up quickly and kept coming back for more.

It had been 10 months since he last saw one of these feeders!
#TheGrackleProject #ManyIndividuals

Further evidence in support of grackles remembering specific humans (or maybe the trap in this case), is Red who also hadn’t seen us for 9 months. Last week, he approached us where we were trapping. He stood on the picnic table next to us, 👀 staring at us and the trap, then flew off.

This is not how a grackle who has never seen us before or grackle that is indifferent to us approaches us or the trap. This indicates that Red recognized us and/or the trap
#TheGrackleProject #ManyIndividuals

9 months after I last saw him, great-tailed grackle, Aqua Aqua remembered me! When I returned a couple of weeks ago and he first saw me, he came close, stared at me, and was probably waiting for something interesting to happen (like a test or something).

❓ Grackle #memory is something we have wondered about on #TheGrackleProject. Do the individuals we work with remember us? If so, for how long?

We know that grackles can recognize individual humans because when we used to do tests in aviaries with them, sometimes a grackle would only work with one of us (or sometimes only one gender, which can be tricky on a team with mostly women!).

But after we released them to the wild, they didn’t treat us differently from other humans. It wasn’t clear whether they just didn’t care, or didn’t recognize us. I think Aqua Aqua has answered this question! ✅

#ManyIndividuals

Is your child smarter than a grackle bird?

Oliver Moody’s young sons go head-to-beak with a species of bird thought to possess cognitive skills that children only begin to acquire aged six or seven

The Times

🙏 A huge thank to the many people involved in making this research happen! The acknowledgements sections of both articles are huge!

❤️ Of course, we couldn’t have done this without the amazing support from Richard McElreath and the Dept. of Human Behavior, Ecology and Culture at the Max Planck Institute for Evolutionary Anthropology

💕 The University of California Santa Barbara has been the steady supporter over all of the years of #TheGrackleProject - providing a home and a place to base the (many!) permits out of, and support through cooperation agreements - thank you!

📰 Press release: https://www.mpg.de/25179774/0811-evan-exploration-and-dispersal-150495-x
📎 Articles: https://doi.org/10.24072/pcjournal.593 and https://doi.org/10.24072/pcjournal.591

Great-tailed grackles in a #population toward the northern edge of their #range (Sacramento/Woodland, California) were less #related to each other, which means that they #dispersed farther from where they hatched 🐣 than grackles in a population nearer the center of their range (Tempe, Arizona).

In particular, females in Arizona stay closer to home 🏡 than males, while females in California disperse farther away from home ✈️ like the males do. To keep pushing the edge of the geographic range further, both males and females must be present so they can breed in the new areas.

Now we know that there are 2 things that are different about the grackles on the edge: they are more #persistent and they disperse farther from where they hatched (especially the females)

Thanks to @DieterLukas for leading this article on grackle genetics and dispersal! #TheGrackleProject

📰 Press release: https://www.mpg.de/25179774/0811-evan-exploration-and-dispersal-150495-x
📎 Article: https://doi.org/10.24072/pcjournal.591

#Vogelarten: Erkundungsfreude & geringere Sesshaftigkeit treiben schnelle Ausbreitung in neue Gebiete voran. 🐦‍⬛ Zwei neue Studien @peercomjournal.bsky.social von einem intl. Team um Corina Logan, @dieterlukas.fediscience.org.ap.brid.gy & Kelsey McCune. #TheGrackleProject www.mpg.de/25181118/081...

Erkundung neuer Gebiete und ge...
Erkundung neuer Gebiete und geringere Sesshaftigkeit treiben schnelle Expansion voran

Verhaltensflexibilität fördert die Bereitschaft zur Erkundung – so können Vögel am Rande ihrer Ausbreitung tiefer in neue Gebiete vordringen