Nestling feeding data from Black-throated Blue Warbler nests, Hubbard Brook Experimental Forest, 1997 - 2010

This dataset provides nestling feeding data recorded by
video cameras placed near black-throated blue warbler nests
at the Hubbard Brook Experimental Forest. We used camouflaged
video cameras mounted on a tripod at nest height but about 10
m distant from the nest. We transcribed videos starting 10
min after recording began to avoid any initial parental
response to the presence of the video camera. During each
adult visit to the nest, we confirmed the feeding parent’s
color bands and recorded its arrival time. We calculated the
number of provisioning visits to the nest per hour
(“provisioning rate”) for males and females separately, and
standardized for differences in brood size by dividing
provisioning rate by brood size. Nests were monitored on
three gridded study plots at the HBEF: low elevation (250-350
m; 85 ha), middle elevation (450-600 m; 65 ha), and high
elevation (750-850 m; 35 ha). See Rodenhouse et al. 2003 for
plot details. These data were gathered as part of the Hubbard Brook
Ecosystem Study (HBES). The HBES is a collaborative effort at
the Hubbard Brook Experimental Forest, which is operated and
maintained by the USDA Forest Service, Northern Research
Station.