2011
Díaz-Valenzuela, R, Lara-Rodríguez, N.Z., Ortiz-Pulido, R., González-García, F. y Ramírez Bautista, A. 2011. Some aspects of the reproductive biology of the Mexican Sheartail (Doricha eliza) in central Veracruz. Condor 113: 177-182. doi: http://dx.doi.org/10.1525/cond.2011.090225
Abstract
The Mexican Sheartail (Doricha eliza) is a hummingbird endemic to Mexico, where it occurs in disjunct populations in the states of Yucatan and Veracruz. In neither area has the species' reproductive biology been studied. On the basis of observations in Veracruz we characterize the species' eggs (the first description for the genus), fledging success, nestling growth, causes of mortality, nest-site selection, and courtship behavior. We located 11 active nests at various stages (8 eggs and 12 chicks, so not all nests contributed to all data sets). Nests were placed on four species of plants (three of them with spines), and some were aggregated. The species nested in natural grasslands and cattle pastures dominated by Acacia. Males formed leks. Chicks fledged from 4 of 11 nests, yielding 8 juveniles from 22 possible. Causes of mortality were predation, weather, human disturbance, and failure to hatch. Conservation of nesting sites in Veracruz is necessary for maintaining a healthy population.
DISTRIBUCIÓN DE COLIBRÍES EN LA ZONA BAJA DEL CENTRO DE VERACRUZ, MÉXICO
Avifauna de la Reserva de la Biosfera Barranca de Metztitlán, Hidalgo, México
UN PANORAMA BREVE DE LA HISTORIA DE LA ORNITOLOGÍA MEXICANA
The effect of spatio-temporal variation in understanding the fruit crop size hypothesis
Frugivoría por Aves en un Paisaje Fragmentado: Consecuencias en la Dispersión de Semillas
Temporal-spatial segregation among hummingbirds foraging on honeydew in a temperate forest in Mexico