Iowa Breeding Bird Atlas II

Effort & Methodology

436 volunteers contributed 10,645 hours of work to survey 791 sample blocks using protocols developed by the BBA II Steering Committee. 395 grid blocks were systematically placed across the state and 396 habitat sites, split evenly between northern and southern Iowa, were drawn by rotating through the habitat types from smallest to largest percent in order to be sure all habitats were represented.

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Sources: public web data + Iowa public records. This listing is not an endorsement. If you see an error, let us know.