TY  - JOUR
T1  - Birds
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 168
SP  - 459
EP  - 469
PY  - 1879/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1879.0047
M3  - doi:10.1098/rstl.1879.0047
AU  - Sharpe, R.
ER  -