共 18 条
[2]
Baltz D.M, 1976, Western Birds, V7, P111
[3]
BELOW TH, 1979, WILSON BULL, V91, P626
[4]
BOND S I, 1971, California Birds, V2, P97
[5]
Brown R.G.B., 1980, P1
[9]
Connors P.G., 1979, Studies in Avian Biology, V2, P101
[10]
Day R., 1980, THESIS U ALASKA