Received: 27 November 2019
Accepted: 14 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: Not applicable. Samples used here were obtained for previously published studies from birds that had been either killed by hunters or trapped under Colorado Division of Wildlife IACUC protocols [CitationRef removed, CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.