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The Distribution of Neotropical Migrant Birds Wintering in the El Cielo Biosphere Reserve, Tamaulipas, Mexico'
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gram, Wendy K. Faaborg, John |
| Copyright Year | 1997 |
| Abstract | We documented the distribution of Neotropical migrant species wintering in four habitats in the Sierra Madre Oriental mountains in northeastern Mexico. We used point-count surveys and mist nets to determine the presence and relative abundance of migrant species in tropical semi-deciduous forest (300 m elevation), cloud forest (1,100 m elevation), humid oak-pine forest (1,200 m elevation), and dry pine-oak forest (1,800 m elevation) in the El Cielo Biosphere Reserve in Tamaulipas, Mexico. Thirty-two species of migrants were observed during the winters of 1993-1995; migrant species represented from 17% to 33% of the species detected in point counts and captured in mist nets in each habitat. Nearly half of the migrant species in El Cielo were habitat specialists; other species were found in a variety of habitats across their wintering ranges. Ruby-crowned Kinglet (Regulus calendula), Wilson's Warbler (Wilsonia pusilla), Blue-gray Gnatcatcher (Polioptila caerulea), and Hermit Thrush (Catharus guttatus) were the most frequently detected migrant species in El Cielo. Northern Mexico is an important wintering area for a diverse group of migrant species. Habitats at higher elevations with temperate-like forests and at lower elevations with tropical forests had the greatest species richness and supported the highest abundance of migrant species. n. Registramos la distribucion de las especies de aves migratorias neotropicales invernando en cuatro habitats de la cordillera de la Sierra Madre Oriental en el noreste de Mexico. Se utilizaron los metodos de puntos de conteo y redes de captura para determinar la presencia y abundancia relativa de las especies migratorias en bosque tropical s벭ucifolio (300 msnm), bosque mesofilo de montana (1100 msnm), bosque humedo encinopino de (1,200 msnm) y en bosque seco de pino-encino (1,800 msnm), dendro de la reserva de la biosfera El Cielo en Tamaulipas, Mexico. Treinta y dos especies de aves migratorias se observaron durante los inviernos de 1993 a 1995; las especies migratorias representaron entre el 17 y 33 % del total de las especies detectadas en los puntos de conteo y capturadas en las redes en cada tipo de habitat. Cerca de la mitad de las especies migratorias presentes en El Cielo son espec'ficas a un tipo de habitat mientras que otras se encontraron en varios habitats a lo largo de su distribucion invernal. Las especies migratorias mas frecuentemente detectadas fueron el Reyezuelo Sencillo (Regulus calendula), el Chipe de Wilson (Wilsonia pusilla), Perlita Grisilla (Polioptila caerulea) y el Zorzalito Colirrufo (Catharus guttatus). La region norte de Mexico es un area importante durante el invierno para un grupo diverso de especies migratorias. Los habitats que tuvieron la mayor riqueza de especies y soportan la mas alta abundancia de especies migratorias fueron los bosques templados y las selvas tropicales. |
| Starting Page | 658 |
| Ending Page | 670 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| DOI | 10.2307/1370478 |
| Volume Number | 99 |
| Alternate Webpage(s) | https://sora.unm.edu/sites/default/files/journals/condor/v099n03/p0658-p0670.pdf |
| Alternate Webpage(s) | https://doi.org/10.2307/1370478 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
