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Supplemental Information

Point count data for each count circle and NORAC Breeding Code for each species observed in 2009 and 2010

DOI: 10.7287/peerj.preprints.407v1/supp-1

Species, ages, and migratory guild of carcasses documented at study buildings in 2009 and 2010

DOI: 10.7287/peerj.preprints.407v1/supp-2

Daily timing of mortality and carcass species observed in 2011 (N = 27 carcass surveys) and 2012 (N = 30 carcass surveys)

DOI: 10.7287/peerj.preprints.407v1/supp-3

Carcass and feather pile persistence during a 7-day scavenger assessment in 2010

DOI: 10.7287/peerj.preprints.407v1/supp-4

Additional Information

Competing Interests

The author declares there are no competing interests.

Author Contributions

Stephen B. Hager conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper, organized and managed the assessment of daily bird mortality in 2011 and 2012..

Matthew E. Craig conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Animal Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

We followed the recommendations of Fair et al. (2010) in reducing impacts to birds resulting from investigator presence during point count surveys. We consulted Fair et al. (2010) for recommendations related to collecting procedures of bird carcasses.

Field Study Permissions

The following information was supplied relating to field study approvals (i.e., approving body and any reference numbers):

Carcasses collected during field surveys and those used in scavenger assessments were salvaged under state Scientific Permit (NH11.0313), Illinois Department of Natural Resources, and federal Salvage Permit (MB08907A-0), U.S. Fish and Wildlife Service.

Funding

MEC received funding through a Summer Research Fellowship at Augustana College. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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