Seasonal and Ecological Associations of the Avifauna from Sierra San Antonio-Pena Nevada, Zaragoza, Nuevo Leon, Mexico‪.‬

Abstract. -- This study examined the avifauna of three vegetational communities of the Sierra San Antonio-Pena Nevada of northeastern Mexico, from June 2001 to May 2002. A total of 1,084 individuals were recorded, comprising 83 species, 62 genera, 31 families and 9 orders. The ecological associations of the species were as follows: Pine 40; Pine-Oak 48; and Oak 58. The seasonal distribution of the species was: Spring 48; Summer 42; Fall 47; and Winter 40. Based on the Shannon's Diversity Index, the highest values were obtained for Oak Forest (H' = 3.16) and for Spring (H' = 3.26). Resumen. -- El presente estudio se realiz sobre la avifauna de tres comunidades vegetales de la Sierra San Antonio-Pe[+ or -]a Nevada, de junio de 2001 a mayo de 2002. Se registraron 1,084 individuos, correspondientes a 83 especies, 62 generos, 31 familias y 9 rdenes. La distribuci n ecol gica de las especies fue la siguiente: Bosque de Pino, 40; Bosque Mixto, 48; y Bosque de Encino, 58. En cuanto a la distribuci n estacional, se obtuvo: Primavera, 48 especies; Verano, 42; Oto[+ or -]o, 47; e Invierno, 40. Utilizando el Indice de Diversidad de Shannon se obtuvieron los valores m[sz]s altos para el Bosque de Encino (H' = 3.16) y para Primavera (H' = 3.26).