Data are presented here by agreement between the atlas project, NBII, and USGS Patuxent Wildlife Research Center.
Results should be
Bird Atlas Explorer (online resource). 2014. U.S. Geological Survey
Patuxent Wildlife Research Center. <Date of access>. http://www.pwrc.usgs.gov/bba.
Data extracted from: Jackson, Laura Spess, Carol A. Thompson, and James J. Dinsmore. 1996. The Iowa Breeding Bird Atlas. Iowa City, IA: University of Iowa Press. 484pp.
Any use of these data should be accompanied by the proper citation as shown above.
The atlast project was initiated in 1983 and cosponsored by the Iowa Department of Natural Resources and the Iowa Ornithologists' Union and in 1988 was joined by the United States Fish and Wildlife Service.
Treatment of the received dataset
We imported the
with modifications as follows to better combine with other atlases or to match publication cited above:
White-faced Ibis, Peregrine Falcon, Scissor-tailed Flycatcher, Ring-billed Gull, and Franklin's Gull were mapped in the original publication but are not included here because they were only observed during the atlas period.
Osprey, Alder Flycatcher, Golden-winged Warbler, Canada Warbler, and Brewer's Blackbird were not mapped in the original publication but are mapped here because they were reported with data of PO or higher.Alder Flycatcher data for one block are missing but the block could not be specified because the species was not mapped in the original publication.
Laura Spess Jackson
see the atlas project site or contact the authors (no email address available - sorry).