Date: 9/7/26 12:32 pm From: Chicobander <jshieldcastle...> Subject: [cobirds] Chico Basin Ranch Banding Station Report-Bird Conservancy of the Rockies-September 7, 2026
You never know what the day will bring. Eighteen bird species caught today including three new species for the season - Song Sparrow, Northern Waterthrush, and a Great-crested Flycatcher. *38 New Banded Birds* Wilson's Warbler- 14 Yellow Warbler- 1 Orange-crowned Warbler- 1 MacGillivray's Warbler- 1 Northern Waterthrush- 1 N. House Wren- 4 Western Wood-Pewee- 2 Great-crested Flycatcher- 1 (First of the year) Red-breasted Nuthatch- 1 Lincoln's Sparrow- 4 House Finch- 1 Song Sparrow- 1 Yellow-breasted Chat- 2 Swainson's Thrush- 1 Gray Catbird- 2 Brown Thrasher- 1
*3 Recaptures- 2 gained weight with Chat staying the same wt.* Wilson's Warbler Cassin's Vireo Yellow-breasted Chat
*1 Returning- bird banded in a different season* Female American Robin - originally banded this spring in May
The banding station will be open tomorrow through Saturday from sunrise until @11:30AM. Stop by and share your sightings. If interested in visiting the ranch please register online at www.aikenaudubon.com I was curious about the recaptures we have been catching. I sorted all the Wilson's Warblers recaptured these last 2 weeks. Thirteen individuals were recaptured out of 156 Wilson's Warblers banded. Recaptures included 4 hatching females, 8 hatching year males and an adult male. Average mass gain was .38 grams. Days between recapture and original banding was 1-3 days. Most of the birds are moving south.
Have a good Labor Day!
Julie Shieldcastle, Bander Chico Basin Ranch Bird Conservancy of the Rockies
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