Black Forest CBC and Rosy-Finches:
We have 100-150 Grey-crowned Rosy-Finches that come to our feeders daily. A characteristic flight pattern is that which you describe: a leap-frogging, rolling-over each other pattern, during which those in back fly over those on the ground to land in front of the flock, then the ones in back fly over those who just landed and settle at the front and so forth.
At times, the whole flock rises in response to some stimulus and they can look like starlings, or cowbirds, even, at a distance, individuals can look like small falcons--just for a moment--until your eyes adjust to their distance from you.
The shimmer of their plumage also can be deceiving and help them look like cowbirds. The variation in plumage among the individuals no doubt has led to many mis-identifications. I have scanned the flock several times, each individual one by one, hoping to find one of the other Rosy-Finches, but no luck! We have had two Black Rosy-Finches. Those two came as single individuals to the feeders to the other side of the house and stayed just moments and clearly were different from anything among the flock of Grey-crowned.
Our neighbors across the ridge share the flock of Grey-crowned with us and it has been a delight to have them be so regular. Sharing them with our neighbors gives some security that they will stay close by. We also are lucky to be among tall grassland, for I believe the species would otherwise depend upon the seedheads of the grasses for food, if we were not there.
I hope this helps.
David Matson
On Sat, Jan 15, 2022 at 1:20 AM <cobirds@googlegroups.com> wrote:
- Black Forest CBC - 1 Update
- Eurasian Wigeon, Pella Crossing, Boulder Cty - 1 Update
Tim Mitzen <tocalytic@gmail.com>: Jan 14 10:49AM -0800
Hugh,
I have seen large mixed species Rosy Finch flocks on the brushy slopes of
North Table Mountain here in Golden in winter feeding the way you
described. I'm not sure if other finches would ...more
bay.wren@gmail.com: Jan 14 08:24AM -0700
The duck continues this morning after a disappearance yesterday afternoon. Same location,etc
Eric DeFonso
near Lyons, CO
Sent from the Aether
...more
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to cobirds+unsubscribe@googlegroups.com.
David Matson
La Veta, Colorado
--
You received this message because you are subscribed to the Google
Groups "Colorado Birds" group.
To post to this group, send email to cobirds@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/cobirds?hl=en?hl=en
* All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate
* Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/
---
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+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CAM-dcqNjBbmhExXcpOkoTuVBqfPw31vYaws56Lxi0X6wvjEe9g%40mail.gmail.com.
No comments:
Post a Comment