TY  - RPRT
TI  - "Wing-flapping" develops in wingless chicks.
AU  - R R Provine
PY  - 1979
DO  - 10.1016/s0163-1047(79)91885-5
UR  - https://pubmed.ncbi.nlm.nih.gov/508221/
ID  - 508221
ER  -