Ramphastos sulfuratus sulfuratus - Rainbow (Keel) billed Toucan

Palmer, T. S. 1928. Auk: 45(1): 70-82.
The Forty-Fifth Stated Meeting of the American Ornithologists' Union

W. S. 1929. Auk: 46(2): 258-259.
Van Tyne on the Habits of the Toucan

Peters, J. L. 1930. Auk: 47(3): 405-408.
The Identity of the Toucans Described By Linnaeus in the 10th and 12th Editions of the Systema Naturae

Tyne, J. V. 1930. Wilson Bulletin: 42(4): 225-232.
The Barro Colorado Laboratory As a Station for Ornithological Research

W. S. 1936. Auk: 53(2): 240-241.
Recent Papers on Guatemalan Birds

Sutton, G. M. and T. D. Burleigh. 1940. Wilson Bulletin: 52(4): 221-233.
Birds of Tamazunchale, San Luis Potosi

Skutch, A. F. 1945. Auk: 62(1): 8-37.
Incubation and Nestling Periods of Central American Birds

Tashian, R. E. 1952. Auk: 69(1): 60-66.
Some Birds from the Palenque Region of Northeastern Chiapas, Mexico

Mayfield, H. 1957. Auk: 74(3): 322-332.
In Memoriam: Josselyn Van Tyne

Edwards, E. P. and R. E. Tashian. 1959. Condor: 61(5): 325-337.
Avifauna of the Catemaco Basin of Southern Veracruz, Mexico

Malcomson, R. O. 1960. Wilson Bulletin: 72(2): 182-197.
Mallophaga from Birds of North America

Skutch, A. F. 1962. Wilson Bulletin: 74(2): 115-152.
The Constancy of Incubation

Skutch, A. F. 1971. Auk: 88(2): 381-396.
Life History of the Keel-Billed Toucan

Schoener, T. W. 1971. Condor: 73(2): 154-161.
Large-Billed Insectivorous Birds: a Precipitous Diversity Gradient

Willis, E. O. 1972. Wilson Bulletin: 84(4): 377-420.
The Behavior of Plain-Brown Woodcreepers, Dendrocincla Fuliginosa

Foster, M. S. 1976. Wilson Bulletin: 88(3): 400-420.
Nesting Biology of the Long-Tailed Manakin

Kantak, G. E. 1979. Auk: 96(1): 183-186.
Observations on Some Fruit-Eating Birds in Mexico

Clark, G. A., Jr. 1979. Journal Of Field Ornithology: 50(2): 162-163.
Side-Stepping and Side-Hopping in Arboreal Birds

Skutch, A. F. and J. W. Fitzpatrick. 1980. Condor: 82(1): 31-42.
Arils As Food of Tropical American Birds

Swierczewski, E. V. and R. J. Raikow. 1981. Auk: 98(3): 466-480.
Hind Limb Morphology, Phylogeny, and Classification of the Piciformes

Kantak, G. E. 1981. Condor: 83(2): 185-187.
Temporal Feeding Patterns of Some Tropical Frugivores

Loiselle, B. A. 1988. Condor: 90(4): 761-772.
Bird Abundance and Seasonality in a Costa Rican Lowland Forest Canopy

Lynch, J. F. 1989. Condor: 91(3): 515-544.
Distribution of Overwintering Nearctic Migrants in the Yucatan Peninsula, I: General Patterns of Occurrence

Blake, J. G. and B. A. Loiselle. 1991. Auk: 108(1): 114-130.
Variation in Resource Abundance Affects Capture Rates of Birds in Three Lowland Habitats in Costa Rica

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

Remsen, J. V., Jr., M. A. Hyde and A. Chapman. 1993. Condor: 95(1): 178-192.
The Diets of Neotropical Trogons, Motmots, Barbets and Toucans

Garcia, F. G. 1995. Condor: 97(2): 415-426.
Reproductive Biology and Vocalizations of the Horned Guan Oreophasis Derbianus in Mexico

Whitman, A. A., J. M. Hagan, III and N. V. L. Brokaw. 1997. Condor: 99(4): 955-965.
A Comparison of Two Bird Survey Techniques Used in a Subtropical Forest

Seavy, N. E., M. D. Schulze, D. F. Whitacre and M. A. Vasquez. 1998. Wilson Bulletin: 110(1): 77-85.
Breeding Biology and Behavior of the Plumbeous Kite