TY  - JOUR
T1  - On the Morphology of Birds. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 42
SP  - 52
EP  - 58
PY  - 1887/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1887.0015
M3  - doi:10.1098/rspl.1887.0015
AU  - Parker, W.
ER  -