[cobirds] Bird Conservancy of the Rockies Chico Banding Station-May 17, 2023

Another nice day to be outside. A few good birds were seen at the banding station but not captured in our nets today (2 different Prairie Warblers and a Yellow-billed Cuckoo). Twenty-two species of birds captured including first of the season Western Kingbird.

 A couple more Bullock's Orioles have returned to the same banding location. 

They were a male and female at least 4 years old banded last spring here at Chico Basin. Something to think about when you have birds nesting; most birds return to the same area each year to breed. If the habitat changes/destroyed they will have to search for another suitable habitat to nest. This may put the bird on the edge of survival. From my Midwest experience with Yellow Warblers is that they return to the same area to breed (Particularly the females have high site fidelity). Migrating Yellow Warblers will still have substantial fat deposits. Where as birds that are close to their breeding grounds have little to no fat reserves as if they know they are close to their destination and do not have to carry the extra "load."  A bit of bird behavioral information to stress importance of conserving habitats.

64 New Banded Birds

Yellow Warbler- 8

MacGillivray's Warbler- 3

Northern Waterthrush- 1

Common Yellowthroat- 1

Warbling Vireo- 1

House Wren- 1

Chipping Sparrow- 1

Brewer's Sparrow- 1

Clay-colored Sparrow- 2

Lazuli Bunting- 2

American Goldfinch- 2

White-crowned Sparrow (Mountain subspecies)- 1

Lincoln's Sparrow- 1

Spotted Towhee- 1

Western Wood-Pewee- 2

Western Kingbird- 1

Swainson's Thrush- 28

Gray Catbird- 5

Bullock's Oriole- 2

4 Recaptures (Amt wt in grams changed since banding)

Common Yellowthroat (+.3g)

Wilson's Warbler (-.2g)

Yellow-breasted Chat (-.5g)

Magnolia Warbler (+.7g)

2 Returning birds banded last year

Bullock's Oriole- 2

The banding station will be open this week every morning through Sunday from Sunrise until @ 11AM. Have a good day!

Julie Shieldcastle

Chico Basin Ranch Bird Bander

Bird Conservancy of the Rockies

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