Text and Data Mining valid from 2019-02-13
Accepted: 5 January 2019
First Online: 13 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All national and institutional guidelines for the care and use of animals were followed. All raptor handling and feather collections were in compliance with the Golden Gate Raptor Observatory standards as described in their Institutional Animal Care and Use Committee protocols. This article does not contain any studies with human participants performed by any of the authors.