Effect of forest management for ruffed grouse Bonasa umbellus on other breeding birds at Barrens Grouse Habitat Management Area, Pennsylvania, USA
This study is summarised as evidence for the following.
Clear or open patches in forestsAction Link
Clear or open patches in forests
A study from mixed woods in Pennsylvania, USA (Yahner 2008), at the same site as Yahner (2003), compared the results from Yahner (2003) with bird surveys in 2005-7. Species composition and abundance differed but early successional species did not decline (despite forest maturation). Overall habitat management for ruffed grouse did not affect other bird populations since the last cutting cycle. During 2005-2007, 46 species were recorded. Of the 17 species recorded 10 or more times, six were observed only in managed area plots (grey catbird Dumetella carolinensis, chestnut-sided warbler Dendroica pensylvanica, common yellowthroat Geothlypis trichas, indigo bunting, field sparrow Spizella pusilla and chipping sparrow S. passerina). No species were observed only within unmanaged plots.