This report is an initial biological assessment of wetland conditions on Long Lake National Wildlife Refuge, Slade National Wildlife Refuge, and Florence Lake National Wildlife Refuge that was conducted as part of the pre-planning phase for...
Birds; Grasslands; Migratory birds; Perching birds; Research; Species of concern;
This is a description of the molt and aging criteria for four grassland passerines. The species covered are Sprague's Pipit, Grasshopper sparrow, Baird's sparrows, and Chestnut-collared Longspurs. Molt information is important for determining...
This is a report that identifies migratory and non-migratory birds species that represent the highest conservation priorities to the U.S. Fish and Wildlife Service.
This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...
