https://planetofbirds.com/wood-warbler-article-1/
Genetically confirmed interbreeding between western Bonelli's warbler ( Phylloscopus bonelli ) and...
Dec 27, 2011 - Wood Warbler (Phylloscopus sibilatrix) Science Article 1 abstract During May and June 2003, a mixed breeding pair consisting of a male western Bonelli's
geneticallyconfirmedinterbreedingwesternbonelli
https://en.wikipedia.org/wiki/Interbreeding_between_archaic_and_modern_humans
Interbreeding between archaic and modern humans - Wikipedia
interbreedingarchaicmodernhumanswikipedia