RESULTS
We collected 176 fecal samples from 116 Kirtland’s Warblers at locations throughout Cat Island, The Bahamas, where we collected 93 samples, and Michigan’s Lower Peninsula, with 63 samples collected in the first recapture period and 20 samples collected at second recapture. Thirty-four birds were sampled twice, once during initial capture in The Bahamas and a second time during first recapture in Michigan. Of those birds, 10 individuals were sampled a third time during a second recapture period in Michigan (Table S1). Additionally, 13 non-tagged Kirtland’s Warblers were sampled in May 2018 in Michigan. Quality control measures resulted in the removal of 10 libraries for poor DNA or PCR yield and 52 contaminant ASVs from the overall dataset. Our final dataset is composed of 166 sequenced libraries (Table 1) totaling 5,007,844 reads, with an average 30,168 reads per library (range: 7,022 – 100,856). We detected 7,426 unique ASVs across all sampled with a mean of 107.3 ± 96.7(standard deviation [SD]) per library.