Dunn, Jenny C.
Clegg, Simon R.
Article History
Received: 24 September 2024
Accepted: 21 July 2025
First Online: 1 August 2025
Declarations
:
: The authors declare no competing interests.
: All birds from which samples were collected were caught as part of standard bird ringing activities under a British Trust for Ornithology ringing licence to JCD. This study received ethical approval from the University of Lincoln Animal Ethics Committee, reference LEAS3818.