CSR Chipping Sparrow note

[Steve Brown]

Hi again,

I just thought of an interesting CHSP observation to share from this week from Clear Spring Ranch.

Early in August I was surprised that about 95% of the Chipping Sparrows I was catching were adults, or at least After Hatch Year birds, with many females with recovering brood patches. This continued for a couple weeks, then things were about 50-50 in mid-August.

Now I am seeing about 95% juvenile birds, with only about 10 adults this week, with 350-400 juvenile birds.

FYI.

Steve Brown
Colo Spgs

Sent from my iPad

[Ted Floyd]

Hey, Steve.

Here's more than you ever wanted to know about Chipping Sparrow demography in Colorado in the summer:

https://cobirds.org/JournalArchives/2010-2019/2011%20Vol%2045/CB_2011_45_3_Jul.pdf

Scroll down to p. 181 for all the inviting details.

Ted Floyd
Lafayette, Boulder County

P. s. Some recent bird sightings: Calliope and Black-chinned hummingbirds still at the feeders at Greenlee Preserve, Boulder County; gazillions of passerines and waterfowl at Windy Gap Reservoir, Grand County, Sept. 7; Sandhill Cranes, Type 5 Red Crossbills, and especially Evening Grosbeaks in Routt County, Sept. 4-6.

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