catharus ustulatus in the backyard at noon today, looking for food in the bushes & on branches - David Sibley says the long-distance thrushes like Swainson's prefer woodland fruits (Spicebush, Sassafras, Black Tupelo, Flowering Dogwood) that are rich in lipids, which is the most efficient fuel for their long flights in late summer and early fall when these are most plentiful.
http://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/3/35/Catharus_ustulatus_-North_Dakota-8a.jpg&imgrefurl=http://en.wikipedia.org/wiki/File:Catharus_ustulatus_-North_Dakota-8a.jpg&usg=__AceYfzuoV-F3e31d-owEQXMyJPk=&h=1944&w=2592&sz=2208&hl=en&start=15&sig2=7wFIw6Zzazq37pqv1yY5Mg&tbnid=apjlBRDhl5YJ6M:&tbnh=113&tbnw=150&prev=/images%3Fq%3Dcatharus%2Bustulatus%26gbv%3D2%26hl%3Den%26safe%3Doff%26sa%3DG&ei=CfK8Svm8CZWyNtyXyLcO
Friday, September 25, 2009
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