TY  - RPRT
TI  - Colour polymorphism in birds: causes and functions.
AU  - P Galeotti
AU  - D Rubolini
AU  - P O Dunn
AU  - M Fasola
PY  - 2003
DO  - 10.1046/j.1420-9101.2003.00569.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14632227/
ID  - 14632227
ER  -