Date: September 13,
2017
Source: American
Ornithological Society Publications Office
Summary:
Birds often choose their mates based on song, making it a key
factor in separating species. However, analyzing spectrograms can only tell us
so much -- the characteristics that birds hone in on when identifying potential
mates may not be the same ones scientists notice in audio recordings. A new
study uses field experiments to 'ask the birds themselves' and uncovers as many
as 21 previously unrecognized species.
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