VTBIRD July 2019
Jean Arrowsmith <[log in to unmask]>
Vermont Birds <[log in to unmask]>
Sat, 13 Jul 2019 16:01:48 -0400
A long time ago I was told that nestlings were fed a primarily protein diet thus fewer feeder visits in midsummer. But this does not explain the absence of males. Perhaps this is yet another example of multi-causation?
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