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From: RonO <rokimoto557@gmail.com>
Newsgroups: talk.origins
Subject: Chick anxiety?
Date: Sun, 27 Oct 2024 09:42:51 -0500
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https://www.sciencedaily.com/releases/2024/10/241024130804.htm

These researchers are trying to measure bird depression and anxiety by 
vocalization, but it looks like they have the wrong model.  What they 
did was put two chicks into different environments.  One chick was put 
in a box by itself, and the other chick was placed in a box with a 
mirror.  The chick with the mirror was fooled into thinking that it was 
not alone, but the chick by itself started giving a different call. 
There likely is anxiety in being separated from their hatch mates, but 
the call they recorded is likely the gathering call.  It is the call 
chicks make when they are lost from their brood, and gets the mother hen 
to find them.  There is likely no more anxiety in the call than when you 
flush a covey of Bobwhite quail, and a few minutes later you start 
hearing the gathering call that gave the quail their name.  The birds 
are just trying to get back together.

Chickens imprint at hatching, but it isn't the same as when ducklings or 
goslings imprint.  Chicks seem to imprint on their environment (brood 
mates as well as their mother) ducklings imprint on specific 
individuals.  Chicks may never imprint on any parent, but they do seem 
to imprint on their hatch mates.  If they are hatched in isolation they 
may not imprint on anything.  Ducklings will imprint on the first human 
face that they see out of the incubator, but chicks do not do this.  The 
chicks will still give out the gathering call when separated from their 
hatch mates.

These researchers likely need another model to measure anxiety.  What 
they are currently doing is differentiating the gathering call from 
normal inter chick vocalizations.

Ron Okimoto