TY  - JOUR
TI  - Wildlife Conservation
T2  - The Wilson bulletin
VL  - 59
IS  - 1
UR  - https://www.biodiversitylibrary.org/part/210692
PB  - Wilson Ornithological Society
CY  - Columbus, Ohio
PY  - 1947
SP  - 56
EP  - 58
AU  - Hamerstrom, Frederick N.,
ER  -