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)