Iowa Breeding Bird Atlas Ii

This Iowa Breeding Bird Atlas II (BBA II) is intended to provide a comprehensive look at the distribution and breeding evidence for Iowa’s breeding birds and document changes since the first atlas effort. These data were gathered during a five-year period and so represent a snapshot in time. This publication summarizes atlas findings through individual species accounts that also include basic information on each species’ status in Iowa along with their habitat, breeding dates, basic nesting information, and population changes as measured by the federal Breeding Bird Survey (Ziolkowski et al. 2010, U.S. Geological Survey 2020). Comparisons are also made to recent atlas efforts in surrounding states in an attempt to provide a regional context to Iowa’s findings.