[CT Birds] Osprey migration

elphick at sbcglobal.net elphick at sbcglobal.net
Sat Aug 30 23:18:48 EDT 2014

Based on this paper on osprey migration (using satellite tags to track movements), we should be getting towards the end of the period in which female ospreys leave the northeast (well past the midpoint of departures) and around the start of the period in which males leave. Note that the sample size for males is small so it probably underestimates the range of departure dates:


The comments about migration timing being more variable in fall vs spring are also widely recognized for migratory birds in general (and make sense for the reasons given). A good breeding year for example could mean that all the birds are ready to leave early. Of course a disastrous year in which all the nests fail could lead to the same thing ...

Chris Elphick
Storrs, CT

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