I live in Westchester NY. I frequent the local reservoir,
where I had the chance to view fledgling green backed herons. It is
August 22 and they still can not fly (but should be able to soon). Is
this normal for this time of year?
Green herons have a fairly long incubation of 3 weeks or more, and
nestling phase of up to 5 weeks before fledging, so I think it not
unusual for the young to be at this stage in late August. Nesting is
a precarious business and a pair may have gotten a later start than
usual for any number of reasons.
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Update: June 2012