Ramphastos tucanus cuvieri - Cuvier's Toucan

Clark, H. L. 1918. Auk: 35(2): 113-123.
Tail-Feathers and their Major Upper Coverts

Chapman, F. M. 1924. Auk: 41(1): 17-29.
Criteria for the Determination of Subspecies in Systematic Ornithology

Pearson, D. L. 1971. Condor: 73(1): 46-55.
Vertical Stratification of Birds in a Tropical Dry Forest

Lemke, T. O. and P. E. Certler. 1978. Condor: 80(4): 453-455.
Recent Observations on the Birds of the Sierra De La Macarena, Colombia

Leck, C. F. 1979. Auk: 96(2): 343-352.
Avian Extinctions in an Isolated Tropical Wet-Forest Preserve, Ecuador

Robinson, S. K. 1985. Auk: 102(3): 506-519.
Coloniality in the Yellow-Rumped Cacique As a Defense Against Nest Predators

Robinson, S. K. 1988. Wilson Bulletin: 100(2): 224-235.
Foraging Ecology and Host Relationships of Giant Cowbirds in Southeastern Peru

Leak, J. and S. K. Robinson. 1989. Wilson Bulletin: 101(1): 134-137.
Notes on the Social Behavior and Mating System of the Casqued Oropendola

Blake, J. G. 1992. Condor: 94(1): 265-275.
Temporal Variation in Point Counts of Birds in a Lowland Wet Forest in Costa Rica'

Prum, R. O., J. D. Kaplan and J. E. Pierson. 1996. Condor: 98(4): 722-735.
Display Behavior and Natural History of the Yellow-Crowned Manakin (Heterocercus Flavirvertex: Pipridae)