Bird Hybrids: Bullock's Oriole x Baltimore Oriole
Baltimore, Bullock's orioles will retain separate identities
Baltimore Oriole Identification, All About Birds, Cornell Lab of Ornithology
A Deep Dive into the Oriole Genome Tackles the Mystery of Hybridization
Orioles of Illinois: They build hanging pouch nests, visit backyard feeders and add color to springtime
8 Types of Orioles to Look for in North America - Birds and Blooms
Revisiting the Baltimore–Bullock's Oriole hybrid zone reveals changing plumage colour in Bullock's Orioles
Bullock's Oriole
Baltimore Oriole Identification, All About Birds, Cornell Lab of Ornithology
May, 2020
The Color of Sport. Color speaks a secret language that our…, by John Thorn
A genomic perspective on the classic hybrid zone between Baltimore and Bullock's Oriole – Avian Hybrids
Oriole hybridization is a dead end: study