Bird detections from multi-species point surveys at lowland forest restoration sites, Indiana, United States, April – June 2016, with resampling code

These data pertain to bird point surveys collected from 30 April 2016 to 12 May 2016 and 23 May 2016 to 25 June 2016 at four bottomland hardwood restoration sites in northeastern Indiana. The data are a single monitoring occasion with the purpose of documenting bird communities across these sites. During the time of collection, sites contained areas of hardwood planting ranging in age from 2 to 22 years, mature forest, old fields, and cropland. Each site was surveyed at multiple, fixed bird survey points; each point was visited at least 7 times. Bird point surveys were conducted between sunrise and 11:00 Central Daylight Time, lasted 5 minutes, and aimed to record all bird species seen and heard within 100 meters of the survey point center. Taxonomic and other classification information is provided for each bird taxon. Other classifications include designation of species as Partners in Flight regional conservation concern species and/or interior forest specialists. Also given are the spatial coordinates of each survey point with a rough habitat classification of each point, either woody plant-dominated or grassland-like. Bird survey data contain detection and non-detection data for 106 bird taxa within 100 meters during each survey, as well as observations of flyover species. Also included is R code to resample the data to create resampled datasets for use in rarefaction-based analyses. Values within the resampled dataset include site, number of points surveyed (samples), number of survey visits per point (subsamples), cumulative number of resampling occasions, presence of grassland-like habitat points among the samples within a resampling occasion., presence of woody plant-dominated habitat points among the samples, and detection/non-detection of different landbird species.