Crosses of birds. Hybrids and mules. | two barred crossbill x bullfinch-loxia leucoptera x pyrrhula pyrhylla.Photo by,Thomas Wendt. | Facebook
![Gene McCarthy, PhD on X: "Red Crossbill x Bullfinch #birds #hybridization # hybrids #biology #science https://t.co/quKGMIXQjm" / X Gene McCarthy, PhD on X: "Red Crossbill x Bullfinch #birds #hybridization # hybrids #biology #science https://t.co/quKGMIXQjm" / X](https://pbs.twimg.com/media/Ctd2wCBUkAAfyaX.jpg)
Gene McCarthy, PhD on X: "Red Crossbill x Bullfinch #birds #hybridization # hybrids #biology #science https://t.co/quKGMIXQjm" / X
Native Birds Their Mules and Hybrids - a nice canary x bullfinch Mule that I judged in Cork a few yrs ago , it went on to take best bird in show | Facebook
![With or without gene flow? Studying speciation in the Grey-headed Bullfinch species complex – Avian Hybrids With or without gene flow? Studying speciation in the Grey-headed Bullfinch species complex – Avian Hybrids](https://avianhybrids.files.wordpress.com/2021/04/grey-headed_bullfinch.jpg?w=705&h=435&crop=1)
With or without gene flow? Studying speciation in the Grey-headed Bullfinch species complex – Avian Hybrids
![Hybrid Goldfinch x Bullfinch híbrido Carduelis carduelis x Pyrrhula pyrrhula. Carduelis carduelis hybride x Pyrrhula pyrrhula. GOLDIE X BULLIE Stock Photo - Alamy Hybrid Goldfinch x Bullfinch híbrido Carduelis carduelis x Pyrrhula pyrrhula. Carduelis carduelis hybride x Pyrrhula pyrrhula. GOLDIE X BULLIE Stock Photo - Alamy](https://c8.alamy.com/comp/AP0A4F/hybrid-goldfinch-x-bullfinch-hbrido-carduelis-carduelis-x-pyrrhula-AP0A4F.jpg)