High in the Andes: colonial nesting of Ecuadorian Hillstar (Oreotrochilus chimborazo: Trochilidae) under a bridge
Anidación colonial por la Estrella Ecuatoriana (Oreotrochilus chimborazo: Trochilidae) en los altos Andes
Palabras clave:
colonial nesting, Ecuadorian Hillstar, Ecuador, human-made structures, Oreotrochilus chimborazoResumen
In this note I present information documenting colonial nesting of Ecuadorian Hillstar (Oreotrochilus chimborazo) under a concrete bridge in the northern Andes of Ecuador. Eleven nests were found and activity was confirmed in seven of them. In general, nests were similar to those previously described in the literature. Possibly the main factor favoring colonial nesting exhibited by Ecuadorian Hillstar is the restricted number of suitable nesting sites found in the high Andes; the presence of a stream under the bridge may ameliorate the low and variable temperatures at such high elevations.
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Referencias
CORLEY-SMITH, G. T. 1969. A high altitude hummingbird on the volcano Cotopaxi. Ibis 111:17-22.
FJELDSÅ, J. & N. KRABBE. 1990. Birds of the High Andes. Zoological Museum, University of Copenhagen & Apollo Books, Svendborg, Denmark.
ORTIZ-CRESPO, F. & R. BLEIWEISS. 1982. The northern limit of the hummingbird genus Oreotrochilus in South America. Auk 99:376-377.
SALAMAN, P. & L. MAZARIEGOS. 1998. The hummingbirds of Nariño, Colombia. Cotinga 10:28-33.
SCHUCHMANN, K. L. 1999. Family Trochilidae (Hummingbirds). Pp. 468-682 in: del Hoyo, J., A. Elliott & D. A. Christie (eds.). Handbook of birds of the world, vol. 5. Lynx Edicions, Barcelona.
WOODS, S., ORTIZ-CRESPO, F. & P. M. RAMSAY. 1998. Presence of Giant Hummingbird Patagona gigas and Ecuadorian Hillstar Oreotrochilus chimborazo jamesoni at the Ecuador-Colombia border. Cotinga 10:37-40.
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Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial 4.0.
