Birds that don't exist: niche pre-emption as a constraint on morphological evolution in the Passeroidea
Stephanie Y. Chia, Anshuman Swain, Nathaniel Josephs, Lizhen Lin, William F. Fagan
The paper identifies a morphological gap in songbirds that suggests competitive exclusion limited evolutionary opportunities in the Passeroidea.
Ecology Letters · Feb 1, 2026Peer-reviewedEcology