RMBO fall migration bird banding at
Chico Basin Ranch commenced on Thursday, September 5th. In three days, we
captured and banded 361
birds of 22 species. Daily species and
numbers follow.
Surprisingly, we have had an
unprecedented number of Brewer’s Sparrows this season. Normally we catch 0-3
per season; over the
12-year history of the banding station, we have banded a total of 21. In the
past 3 days we have banded 97 Brewer’s
Sparrows, nearly all hatching-year birds – apparently it was a good recruitment
year for them! Same goes for Chipping
Sparrows, with 126 banded in 3 days, also mostly young-of-the-year. 2011 was
a banner year for this species at
both our Colorado and western Nebraska banding stations, and 2013 may be
another.
It’s the usual cast of characters
otherwise – no unusual species yet, but we’ll see what the season brings.
Thursday 9/ 5: Total 115
Western Wood-Pewee – 4
Willow Flycatcher – 1
Warbling Vireo -1
House Wren – 2
Ruby-crowned Kinglet – 1
American Robin – 1
Swainson’s Thrush – 1
Gray Catbird – 1
Brown Thrasher – 1
Orange-crowned Warbler – 2
Yellow Warbler – 5
MacGillivray’s Warbler – 1
Wilson’s Warbler – 20
Yellow-breasted Chat – 1
Brewer’s Sparrow – 24
Chipping Sparrow – 49
Friday, 9/6 – Total:
146
Western Wood-Pewee – 5
Willow Flycatcher – 1
Cassin’s Vireo – 1
White-breasted Nuthatch – 1
Gray Catbird – 2
Brown Thrasher – 1
Orange-crowned Warbler – 9
House Wren – 4
Virginia’s Warbler – 1
Yellow Warbler – 2
Wilson’s Warbler – 21
Western Tanager – 4
Lazuli Bunting – 4
Green-tailed Towhee – 1
Brewer’s Sparrow – 42
Clay-colored Sparrow – 6
Chipping Sparrow – 39
Lincoln’s Sparrow – 2
Saturday, 9/5 – Total:
100
Western Wood-Pewee – 3
House Wren – 2
American Robin – 2
Swainson’s Thrush – 2
Gray Catbird – 2
Orange-crowned Warbler – 1
Yellow-breasted Chat – 1
Western Tanager – 2
Black-headed Grosbeak – 1
Lazuli Bunting – 2
Brewer’s Sparrow – 31
Clay-colored Sparrow – 2
Chipping Sparrow – 38
Lincoln’s Sparrow – 1
Wilson’s Warbler – 10
Nancy Gobris, Rocky Mountain Bird Observatory
Steve Brown, Banding Assistant
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