© Dieter Lukas

Corina Logan
Group Leader
Department of Human Behavior, Ecology and Culture
Max Planck Institute for Evolutionary Anthropology
corina_logan [at] eva.mpg.de

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GRACKLES in SACRAMENTO, CALIFORNIA (2021)

Follow their adventures on Twitter #TheGrackleProject

Xango - Adult male
Leg bands: Light blue (left leg) / Yellow (right leg) - Banded in Jan 2021
He wins the prize for solving the fewest options on the log puzzlebox - he didn't solve any of the 4 options. He is one the top 2 grackles with the largest body size with a leg length of 52.6 mm

Flan - Adult female
Leg bands: Orange / Orange - Jan 2021
She was in the top 2 fastest grackles to get through all of the aviary tests - taking less than 4 weeks! She is the lightest grackle, weighing in at 96 grams


© Kelsey McCune
Churro - Adult male
Leg bands: Silver / Green - Jan 2021

Tembleque - Adult male
Leg bands: Yellow / Silver - Jan 2021
When he was temporarily in the aviaries, he was the fastest grackle to reverse a color preference - in 39 trials. In the wild, he liked to go toe to toe with the snakes in his territory!

Polvorones - Adult male
Leg bands: Light blue / Red - Jan 2021
He was the fastest grackle to learn a color preference - in 23 trials

Chocolate - Adult female
Leg bands: Silver / Silver - Jan 2021

Alegria - Adult female
Leg bands: Green / Yellow - Jan 2021
Her motto is "slow and steady". She would often participate in only one trial per day. In her fastest test, she took 6 days to complete the log puzzlebox

Sopapilla - Adult female
Leg bands: Silver / Red - Jan 2021

Piña - Adult female
Leg bands: Yellow / Yellow - Feb 2021
She was an eager participator in behavioral choice tests when she was temporarily in the aviaries and quickly completed everything
Camote - Adult male
Leg bands: Green / Orange - Feb 2021


© Kelsey McCune
Tres Leches - Adult female
Leg bands: Orange / Light blue - Mar 2021


© Kelsey McCune
Helado - Adult male
Leg bands: Orange / Red - Mar 2021
He was pretty exploratory and kept trying to solve options on the social learning apparatus that he was not trained to demonstrate. He is the grackle with the longest wing length - 190 mm

Zapote Negro - Adult male
Leg bands: Silver / Light blue - Mar 2021
He has some interesting ideas about how the world works. When habituating to the log puzzlebox, he seemed to think that he had to tip the log over to open one of the doors even though no touching of the log was required. He is the heaviest grackle, weighing in at 209 grams

Merengue - Adult male
Leg bands: Red / Green - Mar 2021

Carlota - Adult female
Leg bands: Red / Silver - Apr 2021

Buñuelo - Adult male
Leg bands: Red / Yellow - Apr 2021
He was the slowest grackle to learn (47 trials) and reverse (92 trials) a color preference, but he did a great job on the log puzzlebox and solved all 4 options. He is one the top 2 grackles with the largest body size with a leg length of 52.6 mm

Dulce de Leche - Adult male
Leg bands: Green / Light blue - Apr 2021
He was in the top 2 fastest grackles to get through all of the aviary tests - taking less than 4 weeks!