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Seasonal and breeding phenologies of 38 grassland bird species in the midcontinent of North America

January 24, 2024

Grasslands in the midcontinent of North America are highly imperiled, and grassland birds have suffered the largest bird declines of any terrestrial biome in North America in the last 50 years. Consequently, the conservation and management of grasslands, as well as their associated avian communities, are major priorities for the State, Provincial, and Federal agencies; non-governmental organizations; and private entities that influence the millions of hectares of grasslands in the midcontinent. Resource managers often deploy disturbances to grasslands (for example, grazing, haying, and burning) to maintain or enhance their quality or structure, but the timing of these disturbances has the potential to disrupt the nesting activities of grassland birds. In this report, we compiled two types of phenology information for 38 species of nonwaterfowl, grassland-nesting birds across four author-defined regions in the midcontinent of North America: (1) species- and region-specific arrival and departure dates from the eBird database, which indicate when a species may be assumed to be present in a region; and (2) reported dates of nesting activity for each species (start and end dates of nesting as well as total duration) from published bird distribution and occurrence books and breeding bird atlases, which indicate when nesting by a species may be assumed. This previously available but widely dispersed information, compiled for the first time, will aid resource managers and inform their decisions about the timing of disturbances while minimizing grassland management effects on nesting birds.

Publication Year 2024
Title Seasonal and breeding phenologies of 38 grassland bird species in the midcontinent of North America
DOI 10.3133/ofr20241002
Authors Garrett J. MacDonald, Michael J. Anteau, Kristen S. Ellis, Lawrence D. Igl, Neal D. Niemuth, Josh L. Vest
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2024-1002
Index ID ofr20241002
Record Source USGS Publications Warehouse
USGS Organization Northern Prairie Wildlife Research Center