Thursday, November 6, 2014

November 6, the Male Yellow-Rumped Warblers Arrive

We had another slower morning, capturing 52 birds, 36 new and 16 recaptures of 11 different species. One interesting capture was a Prairie Warbler, a bird we haven't seen much of since early October. We also noted a change in our Yellow-rumped Warbler demographics. While until recently, we have been catching mostly females, today we caught 10 males (34%), a higher proportion than we have seen thus far this season. Yellow-rumps have an interesting migration pattern, in that the males and females may migrate separately, with the females beginning their migration earlier in the fall than the males. The arrival of males today may signify that they are also moving south now, and we may expect an increase in our Yellow-rumped Warbler numbers in the near future. 

1 Eastern Phoebe
29 Yellow-rumped Warbler
1 Prairie Warbler
4 Song Sparrow
1 Swamp Sparrow

1 White-eyed Vireo
1 Carolina Wren
1 Hermit Thrush
6 Gray Catbird
1 Common Yellowthroat
2 Yellow-rumped Warbler
1 Song Sparrow
2 Swamp Sparrow
1 Northern Cardinal

# of New Birds: 36
# of Recaptures: 16
# of Species: 11
Effort: 138 net-hours
Capture Rate: 37.68 birds/100 net-hours
# of Nets: 23

Aaron Given
Mattie VandenBoom
Libby Natola