[cobirds] Suburban Nestings - Arapahoe Co.

Fledglings galore in Centennial (Arapahoe County), particularly around houses and shopping centers. My backyard is replete with a House Wren family. I think it's the male with the fledglings in tow, as I've seen one of the adult Wrens collecting additional nesting material, for an apparent second brood. Similarly, Robin families are moving about -- chasing away Blue Jays (and their fledglings) and Magpies; a female, too, is collecting more nesting material. (I've written about what Magpie pairs can do to Robin fledglings here: https://humansandnature.org/what-robins-take-with-them/.) A Spotted Towhee fledgling or two have been around the chokecherry, viburnum, and miscellaneous non-native thicket in my yard. 

Along with the Longmont birders, I've recently heard a Cordilleran Flycatcher in my neighborhood. They're rather uncommon in the neighborhood itself, though they now appear to be expected along local trails (the High Line Canal and Big Dry Creek Trails, especially). Back in 2018, several local birders and I documented a nesting Cordilleran -- though their effort bore a single Cowbird, which did not survive. I've not tried to fully document the nesting since then, but Cordillerans have returned to the nesting site annually. (Our 2018 account of the Cordillerans is here: https://groups.google.com/g/cobirds/c/r9dYQjtouQE/m/Lfqngd3ZAwAJ.) I've seen since Cordilleran Flycatchers in several locations along the High Line Canal and other birders have reported them elsewhere in Centennial.

Late last week, behind the shuttered Sears shopping center at Streets of Southglenn, a Say's Phoebe fed fledglings. (Actually, they were nestlings, but I couldn't resist the alliteration.)

Late last week -- and in my happiest of encounters -- Barn Swallow nestlings filled nests at Cherry Hills Marketplace (University and Orchard) in Greenwood Village. When I went back early this week, many of them had fledged and several were using a clothing store display (of fake or real, but preserved trees) as their perch, as they waited for their parents to return to feed them. Photo here...

- Jared Del Rosso
Centennial, CO

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