TY  - RPRT
TI  - Adaptation, constraint, and compromise in avian postnatal development.
AU  - R E Ricklefs
PY  - 1979
DO  - 10.1111/j.1469-185x.1979.tb01013.x
UR  - https://pubmed.ncbi.nlm.nih.gov/389304/
ID  - 389304
ER  -