Here I have compiled a list of literature which relate in some way to altitudinal migration of birds, with some butterfly references thrown in. I have not included any of the mammal literature, which is substantial. This list is imported directly from my Endnote library so a few general references to distribution along altitudinal gradients may have made it in here as well. If you see any errors or know of other references not on this list, please email me.
ALMEDA, F. and C. M. PRINGLE. 1988. Tropical Rainforests: Diversity and Conservation. California Academy of Sciences, San Francisco, California.
BLAKE, J. G. 1992. Temporal variation in point counts of birds in a lowland wet forest in Costa Rica. Condor 94:265-275.
BLAKE, J. G. and B. A. LOISELLE. 1989. Habitat use by neotropical migrants at La Selva Biological Station and Braulio Carrillo National Park, Costa Rica. Symposium on the Ecology and Conservation of Neotropical Migrant Landbirds, Manomet Bird Observatory, Woods Hole, Mississippi, USA. Smithsonian Institution Press. Washington, D.C., USA. 1992.
BLAKE, J. G. and B. A. LOISELLE. 1991. Altitudinal migrants at Estación Biológica La Selva and Parque Nacional Braulio Carrillo, Costa Rica. Congreso de Ornitología Tropical. IV, Quito. Corporación Ornitológica del Ecuador / Pontificia Universidad Católica del Ecuador.
BLAKE, J. G. and B. A. LOISELLE. 1991. Variation in resource abundance affects capture rates of birds in three lowland habitats in Costa Rica. Auk 108:114-130.
BLAKE, J. G. and B. A. LOISELLE. 2000. Diversity of birds along an elevational gradient in the Cordillera Central, Costa Rica. Auk 117:663-686.
BLAKE, J. G. and B. A. LOISELLE. 2001. Bird assemblages in second-growth and old-growth forests, Costa Rica: perspectives from mist nets and point counts. Auk 118:304-326.
BLAKE, J. G. and B. A. LOISELLE. 2002. Manakins (Pipridae) in second-growth and old-growth forests: patterns of habitat use, movement, and survival. Auk 119:132-148.
BLAKE, J. G., F. G. STILES and B. A. LOISELLE. 1990. Birds of La Selva Biological Station: habitat use, trophic composition, and migrants. Pages 161-182 in Four Neotropical Rainforests (A. Gentry Ed.). Yale University Press, New Haven, CT.
BOYLE, A. 2002. Diet breadth and altitudinal migration in Costa Rican frugivorous birds. Poster Presentation. 3rd North American Ornithological Conference. September 22-24, 2002. New Orleans, Louisiana.
BOYLE, B. L. 1996. Changes on altitudinal and latitudinal gradients in neotropical montane forests. Ph.D. dissertation, Washington University, St. Louis, Missouri.
BREUNER, C. W. and T. P. HAHN. 2003. Integrating stress physiology, environmental change, and behavior in free-living sparrows. Hormones and Behavior 43:115-123.
BURGESS, N. D. and C. O. F. MLINGWA. 2000. Evidence for altitudinal migration of forest birds between montane Eastern Arc and lowland forests in East Africa. Ostrich 71:184-190.
BUSH, M. B. 2002. Distributional change and conservation on the Andean flank: a palaeoecological perspective. Global Ecology and Biogeography 11:463-473.
CHAVES-CAMPOS, J. 2003. Changes in abundance of Crested Guan (Penelope purpurascens) and Black Guan (Chamaepetes unicolor) along an altitudinal gradient in Costa Rica. Ornitología Neotropical 14:195-200.
CHAVES-CAMPOS, J., J. E. ARÉVALO and M. ARAYA. 2003. Altitudinal movements and conservation of Bare-necked Umbrellabird Cephalopterus glabricollis of the Tilarán Mountains, Costa Rica. Bird Conservation International 13:45-58.
COATES-ESTRADA, R. and A. ESTRADA. 1985. Lista de las aves de la Estacion de Biologia Los Tuxtlas. Instituto de Biologia, UNAM, Mexico, D.F.
CONTRERAS, S. 1992. Efecto de los incendios forestales en la modificacion del habitat de la avifauna de la Estacion Cientifica Las Joyas, Sierra de Manantlan, Jalisco-Colima. Universidad de Guadalajara, Jalisco.,
DA SILVA, J. M. C. 1993. The Sharpbill in the Serra dos Carajas, Para, Brazil, with comments on altitudinal migration in the Amazon Region. Journal of Field Ornithology 64:310-315.
DAWSON, D. G. 1981. Counting birds for a relative measure (index) of density. Studies in Avian Biology 6:12-16.
DAWSON, D. G., P. J. DILKS, P. D. GAZE, J. G. R. MCBURNEY and P. R. WILSON. 1978. Seasonal differences in bird counts in forests near Reefton, South Island, New Zealand. Notornis 25:257-278.
DINGLE, H. 1996. Migration: the biology of life on the move. Oxford University Press, New York.
DINGLE, H. 2004. The Australo-Papuan bird migration system: another consequence of Wallace's Line. Emu 104:95-108.
ESCALONA S., G., M. TORRES CH., A. G. NAVARRO-SIGÜENZA, R. VILLALON C., B. HERNANDEZ B. and H. BENITEZ D. 1995. Migratory birds of the cloud forests of Mexico. Pages 15-33 in Conservation of Neotropical Migratory Birds in Mexico (M. H. Wilson and S. A. Sader Eds.).
FARRELL, J. R. 1995. Movement patterns of Pied Currawongs Strepera graculina in central western New South Wales. Corella 19:95-102.
FORD, H. A. and J. F. PURSEY. 1982. Status and feeding of the Eastern Spinebill Acanthorhyncus tenuirostris at New England National Park, north-eastern NSW. Emu 82:203-211.
FRITH, H. J. 1969. Birds in the Australian High Country. A.H. & A.W. Reed, Sydney.
FRITH, H. J. 1976. Birds in the Australian High Country. A.H. & A.W. Reed, Sydney.
FRITH, H. J. 1984. Birds in the Australian High Country. Angus & Robertson,
GARCIA-RUVALCABA, S. 1991. Utilizacion de habitats por la avifauna y su relacion con la estructura y el estado de sucesion en cuatro tipos de bosque en la estacion cientifica Las Joyas (ECLJ), Sierra de Manantlan, Jalisco, Mexico. Universidad de Guadalajara, Jalisco,
GORDON, C. E. and J. F. ORNELAS. 2000. Comparing endemism and habitat restriction in Mesoamerican tropical deciduous forest birds: implications for biodiversity conservation planning. Bird Conservation International 10:289-303.
GRINNELL, J. and A. H. MILLER. 1944. The distribution of the birds of California. Pacific Coast Avifauna
HABER, W. A., R. D. STEVENSON and C. F. GUINDON. 1996. Altitudinal migration and use of forest fragments by Costa Rican butterflies. Bulletin of the Ecological Society of America 77:176.
HAHN, T. P., K. W. SOCKMAN, C. W. BREUNER and M. L. MORTON. 2004. Facultative altitudinal movements by Mountain White-Crowned Sparrows (Zonotrichia leucophrys oriantha) in the Sierra Nevada. Auk 121:1269-1281.
HOBSON, K. A., L. I. WASSENAAR, B. MILA, I. LOVETTE, C. DINGLE and T. B. SMITH. 2003. Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community. Oecologia 136:302-308.
HORVATH, E. G. and K. A. SULLIVAN. 1988. Facultative migration in Yellow-eyed Juncos. Condor 90:482-484.
INOUYE, D. W., B. BARR, K. B. ARMITAGE and B. D. INOUYE. 2000. Climate change is affecting altitudinal migrants and hibernating species. Proceedings of the National Academy of Sciences of the United States of America 97:1630-1633.
JANES, S. W. 1994. Variation in the species composition and mean body size of an avian foliage-gleaning guild along an elevational gradient: Correlation with arthropod body size. Oecologia 98:369-378.
JANZEN, D. H. 1983. Costa Rican Natural History. University of Chicago Press,
JOHNSON, D. N. and G. L. MACLEAN. 1994. Altitudinal migration in Natal. Ostrich 65:86-94.
KARR, J. R. 1976. Seasonality, resource availability, and community diversity in tropical bird communities. American Naturalist 110:973-994.
LAMBA, B. S. and G. K. GARG. 1977. Altitudinal migration of Rufousbelied Wood pecker (sic), Hypopicus hyperythrus (Vigors). Newsletter - Zoological Survey of India 3:297-298.
LAMM, D. W. and S. J. WILSON. 1966. Seasonal fluctuation of birds in the Brindabella Range, Australian Capital Territory. Emu 65:183-207.
LAYMON, S. A. 1989. Altitudinal migration movements of Spotted Owls in the Sierra Nevada, California. Condor 91:837-841.
LEVEY, D. J. 1988. Spatial and temporal variation in Costa Rican fruit and fruit-eating bird abundance. Ecological Monographs 58:251-269.
LEVEY, D. J. and F. G. STILES. 1991. Migración altitudinal de aves costarricenses. Congreso de Ornitología Tropical. IV, Quito. Corporación Ornitológica del Ecuador / Pontificia Universidad Católica del Ecuador.
LEVEY, D. J. and F. G. STILES. 1992. Evolutionary precursors of long-distance migration: resource availability and movements patterns in neotropical landbirds. American Naturalist 140:447-476.
LIEBERMAN, D., M. LIEBERMAN, R. PERALTA and G. S. HARTSHORN. 1996. Tropical forest structure and composition on a large-scale altitudinal gradient in Costa Rica. Journal of Ecology 84:137-152.
LOISELLE, B. A. 1987. Birds and plants in a neotropical rainforest: seasonality and interactions. Ph.D. dissertation, University of Wisconsin, Madison.
LOISELLE, B. A. 1987. Migrant abundance in a Costa Rican lowland forest canopy. Journal of Tropical Ecology 3:163-168.
LOISELLE, B. A. and J. G. BLAKE. 1991. Temporal variation in birds and fruits along an elevational gradient in Costa Rica. Ecology 72:180-193.
LOISELLE, B. A. and J. G. BLAKE. 1991. Diversity and stability of bird populations in tropical wet forests of Costa Rica. Annual Meeting of the Association for Tropical Biology, American Institute of Biological Sciences, San Antonio, Texas, USA. Association for Tropical Biology, St. Louis, MO, 1991.
LOISELLE, B. A. and J. G. BLAKE. 1992. Population variation in a tropical bird community: implications for conservation. BioScience 42:838-845.
LOISELLE, B. A. and J. G. BLAKE. 1994. Annual variation in birds and plants of a tropical second-growth woodland. Condor 96:368-380.
LOISELLE, B. A., J. G. BLAKE, T. C. MOERMOND and D. J. MASON. 1989. Low elevation record for Resplendent Quetzals in Costa Rica. Journal of Field Ornithology 60:86-88.
MORRISSEY, C. A. 2004. Effect of altitudinal migration within a watershed on the reproductive success of American dippers. Canadian Journal of Zoology 85:800-807.
MORRISSEY, C. A., L. I. BENDELL-YOUNG and J. E. ELLIOTT. 2004. Linking contaminant profiles to the diet and breeding location of American dippers using stable isotopes. Journal of Applied Ecology 41:502-512.
MORRISSEY, C. A., L. I. BENDELL-YOUNG and J. E. ELLIOTT. 2004. Seasonal trends in population density, distribution, and movement of American Dippers within a watershed of southwestern British Columbia, Canada. Condor 106:815-825.
NAVARRO-SIGÜENZA, A. G. 1986. Distribucion altitudinal de las aves en la Sierra de Atoyac, Guerrero. Professional thesis, UNAM, Mexico.
NAVARRO-SIGÜENZA, A. G. 1992. Altitudinal distribution of birds in the Sierra Madre del Sur, Guerrero, Mexico. Condor 94:29-39.
NOCEDAL, J. 1995. Seasonal dynamics of foliage-gleaning insectivorous birds in southern Durango, Mexico. Pages 81-97 in Conservation of Neotropical Migratory Birds in Mexico (M. H. Wilson and S. A. Sader Eds.).
NORMENT, C. J. and K. GREEN. 2004. Breeding ecology of Richard’s Pipit (Anthus novaeseelandiae) in the Snowy Mountains. Emu 104:327-336.
O'NEILL, J. P. and T. A. PARKER, III. 1978. Responses of birds to a snow storm in the Andes of southern Peru. Wilson Bulletin 90:446-449.
ORNELAS, J. F. and M. D. C. ARIZMENDI. 1995. Altitudinal migration: implications for the conservation of the neotropical migrant avifauna of western Mexico. Pages 98-112 in Conservation of Neotropical Migratory Birds in Mexico (M. H. Wilson and S. A. Sader Eds.).
OSBORNE, W. S. and K. GREEN. 1992. Seasonal changes in composition, abundance and foraging behaviour of birds in the Snowy Mountains. Emu 92:93-105.
POWELL, G. V. N. and R. D. BJORK. 1994. Implications of altitudinal migration for conservation strategies to protect tropical biodiversity: a case study of the Resplendent Quetzal Pharomacrus mocinno at Monteverde, Costa Rica. Bird Conservation International 4:161–174.
POWELL, G. V. N. and R. D. BJORK. 1994. Altitudinal migrations and habitat linkages in montane environments of Costa Rica: a call for the design of altitudinal corridors. Pages 238-259 in Corredores Conservacionistas en la Región Centroamericana (A. Vega Ed.).
POWELL, G. V. N. and R. D. BJORK. 1995. Implications of intratropical migration on reserve design: a case study using Pharomachrus mocinno. Conservation Biology 9:354-362.
POWELL, G. V. N. and R. D. BJORK. 2004. Habitat linkages and the conservation of tropical biodiversity as indicated by seasonal migrations of Three-Wattled Bellbirds. Conservation Biology 18:500-509.
PRESNALL, C. C. 1935. Altitudinal migration in southern Utah. Condor 37:
RABENOLD, K. N. and P. P. RABENOLD. 1985. Variation in altitudinal migration, winter segregation, and site tenacity in two subspecies of Dark-eyed Juncos in the southern Appalachians. Auk 102:805-819.
RAMAN, T. R. S. 1999. Flocking behaviour and altitudinal movements of the Black Bulbul Hypsipetes madagascariensis in the southern Western Ghats, India. Journal of the Bombay Natural History Society 96:321.
RECHER, H. F., G. GOWING, R. KAVANAGH, J. SHEILDS and W. ROHAN-JONES. 1983. Birds, resources and time in a tablelands forest. Proceedings of the Ecological Society of Australia 12:101-123.
RENNER, S. C. 2005. The Resplendent Quetzal (Pharomachrus mocinno) in the Sierra Yalijux, Alta Verapaz, Guatemala. Journal of Ornithology 146:79-84.
ROBINSON, D. 1992. Why do Flame Robins Petroica phoenicia migrate? A comparision between social and feeding ecologies of the Flame Robin and the Scarlet Robin P. multicolor. Corella 16:1-14.
ROE, N. A. and W. E. REES. 1979. Notes on the Puna avifauna of Azángaro Province, Department of Puno, southern Peru. Auk 96:475-482.
ROSSELLI, L. 1994. The annual cycle of the White-ruffed Manakin Corapipo leucorrhoa, a tropical frugivorous altitudinal migrant, and its food plants. Bird Conservation International 4:143–160.
ROTH, P., D. C. OREN and F. C. NOVAES. 1984. The White Bellbird (Procnias alba) in the Serra Dos Carajás, Southeastern Pará, Brazil. Condor 86:343-344.
ROWLEY, I. 1971. Movement and longevity of ravens in southeastern Australia. CSIRO Wildlife Research 16:49-72.
SHAPIRO, A. M. 1973. ltitudinal migration of butterflies in the central Sierra Nevada. Journal of Research on the Lepidoptera 12:231-235.
SICK, H. 1985. Ornitologia Brasileira: uma introdução. Brasília, Brazil.
STEFANESCU, C. 2001. The nature of migration in the red admiral butterfly Vanessa atalanta: evidence from the population ecology in its southern range. Ecological Entomology 26:525-536.
STILES, F. G. 1983. Introduction. Pages 501-530 in Costa Rican Natural History (D. H. Janzen Ed.).
STILES, F. G. 1988. Altitudinal movements of birds on the Caribbean slope of Costa Rica: implications for conservation. Pages 243-258 in Tropical Rainforests: Diversity and Conservation (F. Almeda and C. M. Pringle Eds.). California Academy of Sciences, San Francisco, California.
STILES, F. G. 1989. Conservation of tropical rain forest birds: a case study from Costa Rica. American Birds 43:420-428.
STREWE, R. and C. NAVARRO. 2003. New distributional records and conservation importance of the San Salvador valley, Sierra Nevada de Santa Marta, Northern Colombia. Ornitología Colombiana 1:29-41.
TAYLOR, M. 1992. Birds of the Australian Capital Territory: an Atlas. Canberra Ornithologists' Group, Canberra.
TERBORGH, J., S. K. ROBINSON, T. A. PARKER, III, C. A. MUNN and N. PIERPONT. 1990. Structure and organization of an Amazonian forest bird community. Ecological Monographs 60:213-238.
TERBORGH, J. W. 1971. Distribution on environmental gradients: Theory and a preliminary interpretation of distributional patterns in the avifauna of the Cordillera Vilcabamba, Peru. Ecology 52:23-40.
TERBORGH, J. W. 1977. Bird species diversity on an Andean elevational gradient. Ecology 58:1007-1019.
TIDEMANN, S. C., S. J. WILSON and T. G. MARPLES. 1988. Some results from a long-term bird-banding project in the Brindabella Range, A.C.T. Corella 12:1-6.
VALIENTE-BANUET, A., A. ROJAS-MARTÍNEZ, A. CASAS, M. DEL CORO ARIZMENDI and P. DÁVILA. 1997. Pollination biology of two winter-blooming giant columnar cacti in the Tehuacán Valley, central Mexico. Journal of Arid Environments 37:331-341.
VAN SCHAIK, C. P., J. W. TERBORGH and S. J. WRIGHT. 1993. The phenology of tropical forests: adaptive significance and consequences for primary consumers. Annual Review of Ecology and Systematics 24:353-377.
VEGA, A. 1994. Corredores Conservacionistas en la Región Centroamericana: Memórias de una Conferencia Regional auspiciada por el Proyecto Paseo Pantera. Heredia. Costa Rica. 17 al 20 Septiembre de 1993. Tropical Research and Development, Inc., Gainesville, Florida.
WILSON, M. H. and S. A. SADER. 1995. Conservation of Neotropical Migratory Birds in Mexico.
WINKER, K., P. ESCALANTE, J. H. RAPPOLE, M. A. RAMOS, R. J. OEHLENSCHLAGER and D. W. WARNER. 1997. Periodic migration and lowland forest refugia in a "sedentary" neotropical bird, Wetmore's Bush-Tanager. Conservation Biology 11:692-697.
WOODBURY, A. M. 1941. Animal migration: periodic-response theory. Auk 58:Almeda, F. and C. M. Pringle. 1988. Tropical Rainforests: Diversity and Conservation. California Academy of Sciences, San Francisco.