P.  Brodkorb, ?New birds from southern Mexico?, Auk, vol. 57, pp. 542-549, 1940.

F.  Bené, ?Rhythm in the brooding and feeding routine of the Black-chinned Hummingbird?, Condor, vol. 42, pp. 207-212, 1940.

A. F.  Skutch, ?Hylocharis leucotis leucotis (White-eared Hummingbird)?, in Life histories of North American cuckoos, goatsuckers, hummingbirds, and their allies, A. C.  Bent, Ed. 1940, pp. 452-465.

W. C.  Hanna, ?Black-crowned Night Heron nesting in San Bernardino Mountains?, Condor, vol. 42, pp. 306-307, 1940.

W. F.  Rapp, Jr, ?A heronry in northern New Jersey?, Auk, p. 106, 1940.

D. E.  Davis, ?Immature Smooth-billed Ani in Florida in 1897?, Auk, vol. 57, p. 571, 1940.

R. T.  Moore, ?The nomenclature and habits of the Black-throated Copper-tailed Hummingbird?, Condor, vol. 42, pp. 251-254, 1940.

N. J.  McDonald, Daly, S., and Gillespie, J. A., ?Snowy Egret nesting in New Jersey?, Auk, p. 106, 1940.

D. E.  Davis, ?Social nesting habits of Guira guira?, Auk, vol. 57, pp. 472-484, 1940.

D. E.  Davis, ?Social nesting habits of the Smooth-billed Ani?, Auk, vol. 57, pp. 179-218, 1940.

R. F.  Miller, ?Yellow-crowned Night Heron nesting in Salem County, New Jersey?, Auk, vol. 57, p. 561, 1940.