[cobirds] Re: Cohorts
If you were to take down your feeders today, would the birds that have been coming to them starve? Probably not. Why? Birds on average, spend only 20% of their "foraging time" in any one location. There are feeding hierarchies among individual or family groups of birds and I suspect there may also be feeding hierarchies among groups of birds. Different groups are allowed to feed in a location when it's their turn? I too, have noticed that although I have 8-10 of a certain species feeding, that I also see similar size groups with different individuals. This has been epecially noticeable with the Redpolls. One group has 3 or 4 orange-variant individuals. Another group of 8 - 10 does not, however I do not see a group of 20 at any one time. Bob Santangelo Wheat Ridge On Saturday, January 26, 2013 5:36:23 PM UTC-7, ouzels wrote: > The ABA blog on redpolls that Ted Floyd cited the other day > goes into amazing depths for a casual bird watcher who might sink in the > esoteric literature on redpolls, DNA, statistics, etc. > One minor point, though, that Bill Schmoker mentioned, raises > a question I have pondered lately. He said, “. . . Flocks coming to feeders > are probably under-counted. For example, if someone counts and reports 75 > redpolls at a feeding station, there well may be a pool of 200 or 300 birds > coming and going.” > I remember someone saying that if you see 4 Black-capped > Chickadees at a feeder at one time, you probably have 16-20 actually > patronizing your largess. > At our feeders we commonly see 5-10 House Finches at a time. > However, when we walk in the field below the house, in a big thicket of > wild plums 200-300 yards away, we typically flush 60-120 House Finches. > Do many species, during non-breeding seasons, move around in > small cohorts compared to their local numbers? Do all those House Finches > in the field sample our feeders sometime during the day? Or do some scorn > our offerings for natural food or a neighbor’s feeders? > > Hugh Kingery > Franktown, 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 post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/zkHwRN0RzN0J. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Re: Wheat Ridge Repolls Continue
Jan 29 update: The Redpolls were here throughout the day and since the snow we got last night has covered up their readily available alternative food sources, the birds were inclined to invest the majority of their foraging efforts at my driveway feeders. Bob Santangelo Wheat Ridge On Tuesday, January 22, 2013 7:19:00 PM UTC-7, birderbob wrote: > Jan22 update - The local Sharpie has been ever-present the past two days > - keeping the other birds at bay. Best bet lately, has been to catch them > at the feeders early - They are arriving just before 8am (which, makes me > late for work! Good thing my boss is sympathetic to a somewhat-excessive > birder) > > Bob Santangelo > Wheat Ridge > > On Saturday, January 19, 2013 4:54:26 PM UTC-7, birderbob wrote: > >> Hello All, >> >> The Redpolls continue to appear at my feeders on a daily basis. Since >> the recent warming trend, they are making an appearance in number around >> 830 - 900a. After that, their arrivals are more individualistic >> and sporadic. The original flock that arrived the weekend of Jan >> 12/13 had a number of orange-variants and I am seeing fewer of those and >> more of the red ones. This would indicate that there are more than the >> original 7 or 8 we first observed. >> >> I would add that it is fine for birders to exit their vehicles at the >> curb, I just don't want unfamiliar vehicles pulling up into the driveway - >> that'll get my spouse's little dogs barking from the front window seat. It >> is okay to park in front of the driveway because the vantage point is kind >> of narrow. Also, I'll pass along a comment from one of my neighbors - he >> said there have been a lot of birders stopping by and one birder had set up >> a nice scope and very politely let him take a look - he was excited to see >> for the first time, birds in great detail, and greatly admired how >> beautiful they were. It is always nice to hear about someone else's >> "moment of discovery" and whoever this ambassador of the birds was deserves >> kudos. >> >> Bob Santangelo (3525 Estes St Wheat Ridge) >> > -- 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 post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/5-GUmWbKwpEJ. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Re: Wheat Ridge Repolls Continue
Jan 29 update: The Redpolls continue to show up daily. The snow cover brought them to the feeders throughout the day. I expect them to behave likewise tomorrow with similar conditions. With snow covering up their readily available alternative food sources, they were inclined to spend the majority of their foraging efforts in my driveway. Bob Santangelo Wheat Ridge On Saturday, January 19, 2013 4:54:26 PM UTC-7, birderbob wrote: > Hello All, > > The Redpolls continue to appear at my feeders on a daily basis. Since the > recent warming trend, they are making an appearance in number around 830 - > 900a. After that, their arrivals are more individualistic and sporadic. > The original flock that arrived the weekend of Jan 12/13 had a number > of orange-variants and I am seeing fewer of those and more of the red > ones. This would indicate that there are more than the original 7 or 8 we > first observed. > > I would add that it is fine for birders to exit their vehicles at the > curb, I just don't want unfamiliar vehicles pulling up into the driveway - > that'll get my spouse's little dogs barking from the front window seat. It > is okay to park in front of the driveway because the vantage point is kind > of narrow. Also, I'll pass along a comment from one of my neighbors - he > said there have been a lot of birders stopping by and one birder had set up > a nice scope and very politely let him take a look - he was excited to see > for the first time, birds in great detail, and greatly admired how > beautiful they were. It is always nice to hear about someone else's > "moment of discovery" and whoever this ambassador of the birds was deserves > kudos. > > Bob Santangelo (3525 Estes St Wheat Ridge) > -- 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 post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/-I5fwHJc-B0J. For more options, visit https://groups.google.com/groups/opt_out.
RE: [cobirds] Red-winged Blackbirds - Jefferson Co.
I've had them on and off all winter at my feeders. Ira Sanders Golden, CO From: cobirds@googlegroups.com [mailto:cobirds@googlegroups.com] On Behalf Of Linda Powers Sent: Tuesday, January 29, 2013 2:23 PM To: king.reg...@gmail.com Cc: cobirds@googlegroups.com Subject: Re: [cobirds] Red-winged Blackbirds - Jefferson Co. Red-winged Blackbirds at Wash. Park wetlands small lake! The sounds of spring. Linda Powers Denver On Jan 29, 2013, at 2:16 PM, Regina wrote: Has anyone else noticed scores of Red-winged Blackbirds mobbing their bird feeders? They first showed up Saturday 1/26, and returned today. Included in their numbers was at least one Yellow-headed Blackbird. Vicinity of Kipling & Bowles. Regina King Littleton, 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 post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/QRR4jjF35e0J. For more options, visit https://groups.google.com/groups/opt_out. -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Three-toed Woodpecker seen near Tarryall
While hiking Saturday in the Lost Creek Wilderness Area near Twin Eagles Trailhead, we saw a Three-toed Woodpecker.Good birdingDave David Elwonger, who roosts at 8400' near Woodland Park Colorado -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Suburban Pueblo birds
COBirders, Two Red-winged Blackbirds showed up in my backyard this afternoon, an unusual occurrence but not really rare. Earlier this month I had a pair of Lesser Goldfinches, the male's back appearing black but the ambient light was less than good. Lately the number of American Goldfinches has increased to about a dozen. Today after the snow 41 White-winged Doves came to gobble up cracked corn while the usual juncos (all sub-species except white-winged), House Finches, American Robins, House Sparrows, Northern Flickers, etc. came to eat and drink. I've uploaded a few photos to my Flickr site http://www.flickr.com/photos/brightsfotos/. If you're not familiar with Flicker, to see in chronological order open and scroll down to the bottom of the dove photos, click on the one on the right, then click again to enlarge. To continue click on the "newer" button above the pic. The photos were shot through two panes of window glass and my comments are for non-birders but you may still find some enjoyment in them. Leon Bright Pueblo -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [cobirds] Red-winged Blackbirds - Jefferson Co.
Red-winged Blackbirds at Wash. Park wetlands small lake! The sounds of spring. Linda Powers Denver On Jan 29, 2013, at 2:16 PM, Regina wrote: > Has anyone else noticed scores of Red-winged Blackbirds mobbing their bird > feeders? They first showed up Saturday 1/26, and returned today. Included > in their numbers was at least one Yellow-headed Blackbird. Vicinity of > Kipling & Bowles. > > Regina King > Littleton, 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 post to this group, send email to cobirds@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msg/cobirds/-/QRR4jjF35e0J. > For more options, visit https://groups.google.com/groups/opt_out. > > -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [cobirds] Red-winged Blackbirds - Jefferson Co.
Not at our feeders, but we saw -- actually, first heard -- a flock of RWBB yesterday at Wonderland Lake in North Boulder, and a friend reported a group near Wanaka Lake in Louisville over the weekend. Deborahann Smith-Cleveland North Boulder, CO On Tue, Jan 29, 2013 at 2:16 PM, Regina wrote: > Has anyone else noticed scores of Red-winged Blackbirds mobbing their bird > feeders? They first showed up Saturday 1/26, and returned today. Included > in their numbers was at least one Yellow-headed Blackbird. Vicinity of > Kipling & Bowles. > > Regina King > Littleton, 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 post to this group, send email to cobirds@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msg/cobirds/-/QRR4jjF35e0J. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Red-winged Blackbirds - Jefferson Co.
Has anyone else noticed scores of Red-winged Blackbirds mobbing their bird feeders? They first showed up Saturday 1/26, and returned today. Included in their numbers was at least one Yellow-headed Blackbird. Vicinity of Kipling & Bowles. Regina King Littleton, 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 post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msg/cobirds/-/QRR4jjF35e0J. For more options, visit https://groups.google.com/groups/opt_out.
Re: [cobirds] RFI: Help with Red-Tailed Hawk ID
Hi Bill et al.: The bird is certainly a Red-tailed Hawk and it is certainly in the midst of its 2nd prebasic molt, the one that replaces most or all of its juvenal (=1st basic) plumage. However, after that, figuring out what the bird is gets a bit tricky, which is not helped by the relatively low quality of the pix (due to distance). The whiteness of the inner-primary panel and the tail suggests Krider's, but the obvious and extensive brown plumage on the head might be considered a strike against that ID, as might the fairly extensive and blackish belly band. However, female Krider's tend to be more heavily marked than do males, so this might well be an immature female Krider's. Then, there's the final problem: What is Krider's? It is considered by some to be a subspecies, but the extensive breeding-range overlap with Eastern Red-tailed Hawk -- overlap that is, essentially, if not actually, complete -- belies that treatment. Though I don't recall where, I do recall reading a paper that strongly suggests that Krider's is simply a restricted-range light(er) morph of Eastern Red-tailed Hawk. Enjoy, Tony Leukering Villas, NJ RFI: Help with Red-Tailed Hawk ID Bill Blackburn Jan 28 12:20PM -0800 Hi all, I was hoping that I could get some input on a Red-Tailed Hawk that I photographed in northern-western Minnesota last May. I've posted these photos on the MN equivalent of COBirds a few days ago and so far haven't received any responses regarding the extent of white on this individual . I hoping to determine if it is a Krider's Morph, partially leucistic, an extremely pale Eastern Red-Tailed Hawk, or something else. To be clear, the bird was photographed 30 miles outside of Grand Forks, ND just inside the MN border on 5/2/12. http://williamhblackburniibirding.shutterfly.com/pictures/179 I know we have quite a few raptor enthusiasts here in Colorado and hopefully some of you will want a break from analyzing photos of immature gulls and potential Hoary Redpolls. Sorry for the low picture quality. Shutterfly is not the best host. I posted both the originals and some cropped and blown up versions. Thanks for any input Bill Blackburn Broomfield, CO williamhblackb...@gmail.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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[cobirds] Golden-crowned Sparrow - Red Rocks - Jeffco
Good morning All, Art Hudak and I had the same idea this morning and threw some seed out at the feeders behind the Red Rocks Trading Post - the Golden crowned Sparrow came out and fed hungrily early on. A Mountain Chickadee was a new addition to the Red Rocks list this year (2013), and we had a White-breasted Nuthatch vocalizing. Lots of juncos of each subspecies including White-winged as well as several hybrid juncos. Still have 4-5 Song Sparrows and 3-4 Spotted Towhees. Art has a complete list. As of 8:30 A.M., there were NO Rosy-finches. Mike Henwood Morrison Jefferson County -- 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 post to this group, send email to cobirds@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
