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Rfalconcam Forum
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Other Nature Related Information
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General Nature Discussion
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The Little Red Spot on a Gull's Bill
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Topic: The Little Red Spot on a Gull's Bill (Read 1954 times)
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Donna
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The Little Red Spot on a Gull's Bill
«
on:
18-Oct-11, 09:40:40 PM »
In the mid-20th Century, Dutch scientist Niko Tinbergen studied nesting Herring Gulls. He noticed that newly hatched chicks were fed by their parents only after they pecked at the adults’ bills. Tinbergen devised experiments that varied the shape and coloration of the adult’s bill. It became clear that the red spot on the adult gull’s bill was a crucial visual cue in a chick’s demands to be fed, and thus its survival.
Photo by: Tom Murry BirdNote
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valhalla
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Re: The Little Red Spot on a Gull's Bill
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Reply #1 on:
19-Oct-11, 04:50:53 AM »
"I'm hungry, Mother"
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Donna
I'm Falcon Crazy
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Posts: 25,377
<3 FLY FREE "CHARLOTTE" <3
Re: The Little Red Spot on a Gull's Bill
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Reply #2 on:
19-Oct-11, 06:09:43 AM »
Quote from: Janet on 19-Oct-11, 04:50:53 AM
"I'm hungry, Mother"
or "Mum", depends where you live!
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valhalla
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Re: The Little Red Spot on a Gull's Bill
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Reply #3 on:
19-Oct-11, 10:34:53 AM »
Quote from: Donna on 19-Oct-11, 06:09:43 AM
Quote from: Janet on 19-Oct-11, 04:50:53 AM
"I'm hungry, Mother"
or "Mum", depends where you live!
Rolly - 101 Dalmations (original cartoon version)
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