Catskill Birds: The Catskill peaks over 3,000 feet support a distinctive sub-alpine bird community including breeding Yellow-bellied Flycatchers, Swainson’s Thrushes, Hermit Thrushes, Magnolia Warblers, Yellow-rumped Warblers, White-throated Sparrows, and Dark-eyed Juncos. Peaks over 3,500 feet support breeding Bicknell’s Thrushes and Blackpoll Warblers. This is the southernmost extension of the breeding range of these two species. In 1997, spot-mapping surveys of three plots totaling 24.4 hectares on two Catskill peaks (two on Hunter and one on Plateau) found 11 Yellow-bellied Flycatcher territories, 23-27 Bicknell’s Thrush territories, 10–11 Swainson’s Thrush territories, 12–13 Magnolia Warbler territories, 22-25 Yellow-rumped Warbler territories, and 71–78 Blackpoll Warbler territories (Rimmer and McFarland 1997). The average density of Bicknell’s Thrush over the three study plots in 1997 was 50 territories/40 hectares. Researchers estimated that Hunter Mountain might have supported 30–35 pairs of Bicknell’s Thrush in 1997. Other at-risk species found at the site include the American Black Duck (breeds), Osprey (breeds), Bald Eagle (observed in breeding season), Sharp-shinned Hawk (breeds), Cooper’s Hawk (breeds), Northern Goshawk (breeds), Red-shouldered Hawk (breeds), Peregrine Falcon (breeds), American Woodcock (breeds), Olive-sided Flycatcher (breeds), Wood Thrush (breeds), Cerulean Warbler (breeds), and Canada Warbler (breeds).