Durante los dos meses intensivos de muestreo entre Septiembre y Noviembre de 2009, registramos 31 especies de aves migratorias Neotropicales en nuestras tres estaciones de trabajo en la Sierra Nevada de Santa Marta. Este número de especies representa el 60% de las especies migratorias terrestres Neotropicales que llegan a Sur América!.
Vale la pena resaltar algunas especies que estuvieron presentes en nuestras estaciones con números importantes durante el otoño como Catharus fuscescens y Vireo flavoviridis. En comparación con la primavera anterior, se destaca la baja abundancia o aucencia de Piranga olivacea y de Dendroica fusca lo que sugiere que estas especies toman una ruta diferente durante el otoño.
A continuación mostramos la tabla que resume el numero de capturas y observaciones de especies migratorias para nuestras tres estaciones en la Sierra Nevada durante la migración de otoño 2009.
| Nombre cientifico |
Nombre ingles |
Capturas |
Observados |
| Buteo platypterus |
Broad-winged Hawk |
|
1 |
| Falco columbarius |
Merlin |
|
2 |
| Coccyzus americanus |
Yellow-billed Cuckoo |
|
2 |
| Contopus cooperi |
Olive-sided Flycatcher |
|
12 |
| Empidonax traillii |
Willow Flycatcher |
2 |
|
| Empidonax alnorum |
Alder Flycatcher |
4 |
|
| Myiarchus crinitus |
Great Crested Flycatcher |
1 |
1 |
| Tyrannus tyrannus |
Eastern Kingbird |
|
3 |
| Riparia riparia |
Bank Swallow |
|
2 |
| Hirundo rustica |
Barn Swallow |
|
5 |
| Petrochelidon pyrrhonota |
Cliff Swallow |
|
1 |
| Catharus fuscescens |
Veery |
319 |
47 |
| Catharus minimus |
Gray-cheeked Thrush |
31 |
2 |
| Catharus ustulatus |
Swainson’s Thrush |
9 |
2 |
| Vireo flavifrons |
Yellow-throated Vireo |
|
1 |
| Vireo olivaceus |
Red-eyed Vireo |
11 |
21 |
| Vireo flavoviridis |
Yellow-green Vireo |
401 |
172 |
| Icterus galbula |
Baltimore Oriole |
|
1 |
| Mniotilta varia |
Black-and-White Warbler |
7 |
20 |
| Vermivora peregrina |
Tennessee Warbler |
43 |
72 |
| Dendroica petechia aestiva |
Yellow Warbler |
|
4 |
| Dendroica fusca |
Blackburnian Warbler |
22 |
98 |
| Dendroica striata |
Blackpoll Warbler |
|
7 |
| Setophaga ruticilla |
American Redstart |
3 |
113 |
| Seiurus noveboracensis |
Northern Waterthrush |
11 |
21 |
| Seiurus motacilla |
Louisiana Waterthrush |
7 |
9 |
| Protonotaria citrea |
Prothonotary Warbler |
3 |
12 |
| Oporornis formosus |
Kentucky Warbler |
3 |
|
| Oporornis philadelphia |
Mourning Warbler |
1 |
2 |
| Piranga rubra |
Summer Tanager |
|
5 |
| Pheucticus ludovicianus |
Rose-breasted Grosbeak |
15 |
46 |
| TOTAL |
|
893 |
684 |
English Summary: The above table summarises the totals of Neotropical migrants both captured and observed during two months of intensive field work between Sept-Nov 2009 in the Sierra Nevada. At a community level, it is noteworthy that we recorded 60% of the approximately 48 landbird migrant species that regularly occur in South America. The lower abundance or absence of certain species that were present in the spring is also of interest, e.g. Blackburnian Warbler and Scarlet Tanager, suggesting that migration routes vary by season.