In reply to Dave's posting about Cordilleran Flycatcher, there have been at least 2 birds in my neighborhood since spring calling and I presume nesting. I have put them on eBird lists several times.
On a side note, hummers arrived in some numbers this morning including BCHU along with the usual BTHU and RUHU that have been here for a week or so. I haven't seen Calliope yet. Ira Sanders Golden On Fri, Jul 23, 2021 at 12:53 PM DAVID A LEATHERMAN <[email protected]> wrote: > Over the past 45 years or so of visiting Fort Collins' Grandview Cemetery > and also spending a lot of time on the eastern plains at places like the > Pawnee Grasslands and Lamar, the occasional and seemingly increasing > presence of foothills/lower mountain species at low elevation has intrigued > me. > > I have mostly attributed this to maturation of the "urban forest", > especially Colorado Blue Spruce but certainly other conifers and many > deciduous trees, as well. > > Species with the bulk of their breeding habitat in the foothills and lower > mountains that sometimes breed in Grandview Cemetery include: red-breasted > nuthatch (of late, every year), broad-tailed hummingbird (of late, every > year), western wood-pewee (of late, 2 out of every 3 years), chipping > sparrow (of late, every other year), ruby-crowned kinglet (of late, every > third year), red crossbill (ever(?), once), western tanager (ever(?), once). > > Now I am beginning to wonder about cordilleran flycatcher. In the last > couple weeks there have been reports of this species at the > prairie-foothills interface from several locations along the Front Range on > COBIRDS. Last weekend I can add another from the River's Edge Natural Area > in Loveland (Big Thompson River near the softball complex at the old > fairgrounds). The Loveland bird was a male giving the characteristic > territorial "squeek-itt!" call. Other recent reports have mentioned > detection via this same vocalization. > > I have questions. BBAII accounts indicate one nesting cycle and attribute > late nests to renesting after early nest failures. The "Birds of the > World" account for this species mentions the likelihood of two nesting > cycles in Oaxaca, MX. Do the recent reports represent second-try nesting > at lower elevation? Do they represent second nestings at lower elevation > after a successful nesting higher up? Do they represent post-breeding > dispersal, with the individuals simply vocalizing in the lower elevation > area they moved to as if on territory? Does the "new normal" of fires and > smoke in the mountains of the West have anything to do with what appears to > be a shift to lower elevations at this time of year? > > We birders need to keep reporting our presence/absence and behavioral > observations of all species, including common ones, and I still > maintain COBIRDS is a good place to do that. Thanks to everyone who makes > the effort to post to COBIRDS, especially if that means extra effort > because you also did an eBird checklist or posted to some other media. > There is no such thing as "excessive" communication. > > Dave Leatherman > Fort Collins > > -- > -- > You received this message because you are subscribed to the Google > Groups "Colorado Birds" group. > To post to this group, send email to [email protected] > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/cobirds/DM5PR0601MB3768E86309741AD9A7582DB3C1E59%40DM5PR0601MB3768.namprd06.prod.outlook.com > <https://groups.google.com/d/msgid/cobirds/DM5PR0601MB3768E86309741AD9A7582DB3C1E59%40DM5PR0601MB3768.namprd06.prod.outlook.com?utm_medium=email&utm_source=footer> > . > -- Ira Sanders Golden, CO "My mind is a raging torrent flooded with rivulets of thought cascading into a waterfall of creative alternatives." -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected] 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/CABF3siGLHVw%3DHU6hRE0-Da26oADFqCQbiwUpFRM9eBc6LPRnPg%40mail.gmail.com.
