Search
Now showing items 1-2 of 2
Observer Effects and Avian-Call-Count Survey Quality: Rare-Species Biases and Overconfidence
(2012-01)
Wildlife monitoring surveys are prone to nondetection errors and false positives. To determine factors that affect the incidence of these errors, we built an Internet-based survey that simulated avian point counts, and ...
Spatiotemporal Patterns in Nest Box Occupancy by Tree Swallows Across North America
(2012-06)
Data from the North American Breeding Bird Survey (BBS) suggest that populations of aerial insectivorous birds are declining, particularly in northeastern regions of the continent, and particularly since the mid-1980s. ...