Hi Deb
Not familiar where Denver gulls move around to ... but your choices make sense
they like big open areas to roost.
Gary
On Friday, February 14, 2020, 11:03:57 AM MST, Deborah Carstensen
<[email protected]> wrote:
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
<[email protected]> 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, Nunnhttp://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 RossoCentennial, CO
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