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Tuesday, November 4, 2025

A Push of Winter Sparrows

 CAPTAIN SAMS 

Today might have been the "sparrow-iest" day we have ever had at KIBS with 36 individuals at Captain Sams and 27 at Little Bear. I cannot remember another day having banded more sparrows than we did today. 

It was a very productive early November day at Captain Sams with 107 new birds and 17 recaptures of 18 species. There was good movements of kinglets, sparrows and Yellow-rumped Warblers last night, all of which made it into our nets in relatively large numbers. 

Included in our sparrow line-up was two more Field Sparrows and a White-crowned Sparrow. Both of these species are infrequent at KIBS and as I mentioned a few days ago it had been a couple of years since we captured a Field Sparrow. Since 2012, we've averaged 1.8 Field Sparrows/year and 1.5 White-crowned Sparrows/year. Although, it seems that we are catching fewer Field Sparrows than we use to but more White-crowned Sparrows than in the past. 

These two species look quite similar sporting matching colors of tan, brown, and rufous. Both display an orange/pinking bill but the White-crowned Sparrow is about double the size of a Field Sparrow. The two Field Sparrows today average about 12 grams while White-crowned Sparrow weighed 25 grams.  
-Aaron

 
Comparison of Field Sparrow (left) and juvenile White-crowned Sparrow (right)

       
LITTLE BEAR
It was a pleasantly busy day at Little Bear with 63 new birds and 11 recaptures, many of which were sparrows! The shrubbery around the station was crawling with small flocks of sparrows including Song, White-throated, and Swamp. We were surprised to catch ten White-throated Sparrows as the previous record at Little Bear was six in a season. With today's captures, our total for the season is now 14! We had some other interesting captures including a Sharp-shinned Hawk, Brown Creeper, and Dark-eyed Junco. The Sharp-shinned Hawk has been hanging around the station for the last few days so I figured it was only a matter of time before we caught her. In fact, yesterday we heard a tussle behind the banding table and got to watch a tough little catbird escape the sharpie's grasp. 
-Arden

  SpeciesCaptain SamsLittle Bear
NewRecapsNewRecaps
Sharp-shinned Hawk
--1-
Yellow-bellied Sapsucker
1---
Eastern Phoebe 
7-8-
Golden-crowned Kinglet
4---
Ruby-crowned Kinglet
13-41
Brown Creeper
--1-
Carolina Wren 
---2


House Wren
1---
Gray Catbird
91028
Hermit Thrush
613-
Dark-eyed Junco
--1-
Field Sparrow
2---
White-crowned Sparrow
1-1-
White-throated Sparrow
3-10-
Song Sparrow
17-10-
Swamp Sparrow
1315-
Orange-crowned Warbler
--1-
Palm Warbler (Western)
1-1-
Yellow-rumped Warbler (Myrtle)2127-
Common Yellowthroat-11-
Northern Parula--2-
Northern Cardinal-1--
Indigo Bunting 1---
Painted Bunting715-




Today's Banding StatsCaptain SamsLittle BearTOTAL
# Birds Banded
107
63
170
# of Recaptures
17
11
28
# of Species
17
18
23
Effort (net-hours)
198.4
155.4
353.8
Capture Rate (birds/100 net-hours)
62.5
47.6
56.0
# of Nets
32
26
-

2025 Fall Cumulative Banding Stats Captain SamsLittle BearTOTAL
# Birds Banded
4,874
3,372
8,246
# of Recaptures
1,005
913
1,918
# of Species
90
90
104
Effort (net-hours)
12,406.3
9,027.86
21,434.16
Capture Rate (birds/100 net-hours)
47.6
47.5
47.4
# of Days7868



Banding Staff

Aaron Given (CS)
Michael Gamble (CS)
Liz Held (LB)
Arden Schneider (LB)
Camille Beckwith (CS)




Note:  All banding, marking, and sampling is being conducted under a federally authorized Bird Banding Permit issued by the U.S. Geological Survey’s Bird Banding Lab.

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