I’ve seen amazing numbers of gulls flying north to south near Littleton, Platte Canyon and Bowles, at sunset. Going to Chatfield? South Platte reservoir? Deb Carstensen, Arapahoe county
Sent from my iPhone > On Feb 14, 2020, at 8:57 AM, 'The Nunn Guy' via Colorado Birds > <cobirds@googlegroups.com> wrote: > > > Hi Jared > > Could not find a "gull in flight ID guide" but found these useful PDFs about > gull ID: > http://assets.press.princeton.edu/chapters/i13273.pdf > http://www.johnmuirlaws.com/wp-content/uploads/2016/04/Laws_Gull_ID.pdf > This book is excellent: > https://www.amazon.com/Gulls-Simplified-Comparative-Approach-Identification/dp/0691156948 > Thanks Gary Lefko, Nunn > http://www.friendsofthepawneegrassland.org/ > >> On Thursday, February 13, 2020 at 5:48:04 PM UTC-7, Jared Del Rosso wrote: >> I've lived in Centennial for four winters now. This winter, like the last >> several, significant numbers of gulls move west to east around dawn and back >> again at dusk. Tonight, the movement was significant, with several large >> kettles of them forming to rise, gracefully, on thermals and even more just >> passing by. I didn't count tonight, but the movement spanned thirty or so >> minutes tonight. >> >> I rarely identify them and struggle to do so from far below. Most are, of >> course, Ring-billed. There were larger ones mixed in. >> >> I'm located near Arapahoe and University in Centennial. Most of the movement >> occurs right over a line of transmission towers near deKoevend Park, though >> of course the birds drift north and south of that. One wonders where they >> come from at night (Aurora Reservoir, which is almost due east?) and where >> they head. >> >> Are there any sources on ID'ing gulls in flight? >> >> Also tonight: a local magpie seemed to be gently, but conspicuously singing. >> It was especially endearing, given how noisy and brazen these birds usually >> are. >> >> - Jared Del Rosso >> Centennial, CO > > -- > 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 cobirds+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/cobirds/58a1cc31-c272-4bd2-bc53-d2c10fae5a28%40googlegroups.com. -- 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 cobirds+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/524B8743-DA6E-4134-8196-330C42BB8002%40aol.com.
