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An open beak question
In the garden the teperatures have reached over 30 degrees for 4 or 5 days now (it's a sun trap, it's about 27 deg in the area though), but what has attracted my attention is the birds in the garden all seem to be resting or walking with their beaks open. This makes them look a bit dopey but I was wondering if it is some sort of cooling mechanism?
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