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Hobson, Keith A.; Wassenaar, Len I.; Milá, Borja; Lovette, Irby; Dingle, Caroline; Smith, Thomas B. (20 May 2003). "Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community". Community Ecology. 136 (2): 302–308. Bibcode:2003Oecol.136..302H. doi:10.1007/s00442-003-1271-y. PMID12756525. S2CID12937433.
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Hobson, Keith A.; Wassenaar, Len I.; Milá, Borja; Lovette, Irby; Dingle, Caroline; Smith, Thomas B. (20 May 2003). "Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community". Community Ecology. 136 (2): 302–308. Bibcode:2003Oecol.136..302H. doi:10.1007/s00442-003-1271-y. PMID12756525. S2CID12937433.
Colwell, Robert K.; Brehm, Gunnar; Cardelús, Catherine L.; Gilman, Alex C.; Longino, John T. (10 October 2008). "Global Warming, Elevational Rage Shifts, and Lowland Biotic Attrition in the Wet Tropics". Science. 322 (5899): 258–261. Bibcode:2008Sci...322..258C. doi:10.1126/science.1162547. PMID18845754. S2CID11333531.
Loiselle, Bette A.; Blake, John G. (1 February 1991). "Temporal Variation in Birds and Fruits Along an Elevational Gradient in Costa Rica". Ecology. 72 (1): 180–193. Bibcode:1991Ecol...72..180L. doi:10.2307/1938913. JSTOR1938913.
Loiselle, Bette A.; Blake, John G. (1 February 1991). "Temporal Variation in Birds and Fruits Along an Elevational Gradient in Costa Rica". Ecology. 72 (1): 180–193. Bibcode:1991Ecol...72..180L. doi:10.2307/1938913. JSTOR1938913.
Hobson, Keith A.; Wassenaar, Len I.; Milá, Borja; Lovette, Irby; Dingle, Caroline; Smith, Thomas B. (20 May 2003). "Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community". Community Ecology. 136 (2): 302–308. Bibcode:2003Oecol.136..302H. doi:10.1007/s00442-003-1271-y. PMID12756525. S2CID12937433.
Colwell, Robert K.; Brehm, Gunnar; Cardelús, Catherine L.; Gilman, Alex C.; Longino, John T. (10 October 2008). "Global Warming, Elevational Rage Shifts, and Lowland Biotic Attrition in the Wet Tropics". Science. 322 (5899): 258–261. Bibcode:2008Sci...322..258C. doi:10.1126/science.1162547. PMID18845754. S2CID11333531.
Boyle, W. Alice; Conway, Courtney J.; Bronstein, Judith L. (13 July 2013). "Why do some, but not all, tropical birds migrate? A comparative study of diet breadth and fruit preference". Evolutionary Ecology. 25: 219–236. doi:10.1007/s10682-010-9403-4. S2CID7516649.
Hobson, Keith A.; Wassenaar, Len I.; Milá, Borja; Lovette, Irby; Dingle, Caroline; Smith, Thomas B. (20 May 2003). "Stable isotopes as indicators of altitudinal distributions and movements in an Ecuadorean hummingbird community". Community Ecology. 136 (2): 302–308. Bibcode:2003Oecol.136..302H. doi:10.1007/s00442-003-1271-y. PMID12756525. S2CID12937433.
Thiollay, Jean-Marc (July 1996). "Distributional patterns of raptors along altitudinal gradients in the northern Andes and effects of forest fragmentation". Journal of Tropical Ecology. 12 (4): 535–560. doi:10.1017/s0266467400009767. S2CID83775934.
Colwell, Robert K.; Brehm, Gunnar; Cardelús, Catherine L.; Gilman, Alex C.; Longino, John T. (10 October 2008). "Global Warming, Elevational Rage Shifts, and Lowland Biotic Attrition in the Wet Tropics". Science. 322 (5899): 258–261. Bibcode:2008Sci...322..258C. doi:10.1126/science.1162547. PMID18845754. S2CID11333531.