On the Grackle theme, on the morning of 9/10 I watched an estimated 2,500 *Common Grackles* moving past St. Mary Catholic Church and Lee Gulch at South Prince Street in Littleton, Arapahoe Co. They were all going SE in a more or less steady stream of flocks over 45 min.
The local breeders had departed some time ago, and I'm sure these were part of a migratory movement. Most of them showed tail feathers in heavy molt. I did not see a similar movement at the same time period this morning, and these were much larger numbers that I happened to have seen over the St. Mary area in the past two Septembers. There is a rather large roost of migrants at this time of year SE and near C470 x Santa Fe (Douglas Co.), but that is about 2.5 miles south and the wrong direction for the birds I saw passing on 9/10, plus that roost flies out shortly after sunrise, about 1.5 hours earlier than my observation on 9/10. David Suddjian Ken Caryl Valley Littleton, CO On Sun, Sep 11, 2016 at 4:07 PM, Charles Hundertmark < [email protected]> wrote: > This afternoon, we had a large flock of Common Grackles in our front yard > - not a particularly exciting bird for list purposes, but an interesting > phenomenon. For about a week or so now, I’ve been noting flocks of 100-200 > grackles moving through the neighborhood. They are feeding vigorously and > moving on quickly. Interestingly, many of them are molting. I’m wondering > if the grackles undergo a molt migration in the fashion that Ted Floyd has > so insightfully informed us about for Chipping Sparrows. > > Chuck Hundertmark > Lafayette, CO > 303-604-0531 > > -- > You received this message because you are subscribed to the Google Groups > "Colorado Birds" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > To view this discussion on the web visit https://groups.google.com/d/ms > gid/cobirds/81407853-9AEE-4453-BF8F-BE781DD4307E%40gmail.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CAGj6RoqyJ-7pmmaQjFKABnuYWCZ5Qz4tzSaVgpd3Y7Zohnds5g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
