Birding Shanghai in December 2023
10,000 Birds
JANUARY 1, 2024
Azure-winged Magpies are cooperative breeders, and it seems that there is a connection between having a larger repertoire of calls and being a social species (me, not being very social, I usually get by with just three different grunting sounds). But not in Europe either. for a sample of more than 800 species ( source ).
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