Saturday, November 14, 2015

Aging and Sexing Yellow-rumps Revisited

Captain Sam's 
It was not as busy as we were hoping but we still had a good day with 50 new birds and 18 recaptures, comprised of 13 species.  Most of the action happened in the first run, when a small flock of Yellow-rumped Warblers decided to fly into one net.  Since we are in midst of our Yellow-rumped Warbler season, I believe it is the perfect time to share a post on how we determine the age and sex of Yellow-rumped Warblers.  Back in 2012, Aaron wrote an in depth post on aging and sexing Yellow-rumped Warblers which can be seen by clicking this link:  Aging and Sexing Yellow-rumps   

-Mattie  

  
Little Bear
A slow morning with high winds that increased after dawn forced an early shut down of nets. This lead to a total of 11 new birds and 2 recaptures.

The highlight  of the shortened session was our 3rd Field Sparrow for the season. During a net round out on the dunes 100's of Tree Swallows were feeding over the salt marsh with the early morning sun light glinting off their wings.

- Chris

  Species Captain Sam's Little Bear
New Recaps New Recaps
Eastern Phoebe 1 - 1 -
Blue-headed Vireo 1 - - -
Carolina Chickadee - 1 - -
Golden-crowned Kinglet - 1 - -
Ruby-crowned Kinglet 8 - 1 -
Hermit Thrush 1 - - -
Gray Catbird 1 6 2 -
Orange-crowned Warbler 1 - - -
Common Yellowthroat - - 1 -
Yellow-rumped Warbler 34 6 5 -
Field Sparrow - - 1 -
Song Sparrow 1 1 - 1
Swamp Sparrow - 1 - 1
White-throated Sparrow 1 - - -
Northern Cardinal 1 2 - -


 Banding Stats Captain Sam's Little Bear TOTAL
# Birds Banded 50 11 61
# of Recaptures 18 2 20
# of Species 13 8 15
Effort (net-hours) 146.5 31.4 177.9
Capture Rate (birds/100 net-hours) 46.4 41.4 45.5
Nets 25 15 40

Banding Staff
Mattie VandenBoom (CS)
Chris Snook (LB)
Nancy Raginski (LB)
Casey Weissburg (LB)
Michael Gamble (CS)
Ryan Donnelly (CS)

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