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Eastern Bluebird
Sialia sialis
(L 7" WS 13" Wt 1.1 oz)
Pinckney Island NWR
27Apr2011
When predator appears female
will sing for help from males
who make warning songs.
will sing for help from males
who make warning songs.
Sialia in Greek is a bird
mentioned by Athenaeus
and Hesychius.
mentioned by Athenaeus
and Hesychius.
© Audubon
Society
Society
© Wikipedia
© BirdNote,
Ellen Blackstone