The result of this study illustrate the continuing need for inventory efforts focused on Mexican birds and I considered this area is very important for bird conservation, because yet exits a great richness and abundance of endemic bird species to the region: Ortalis poliocephala, Philortyx fasciatus, Cynanthus sordidus, Amazilia violiceps, Calothorax lucifer, Melanerpes
Cavity-nesting birds included red-headed woodpecker (Melanerpes
erthrocephalus), downy woodpecker (Picoides pubescens), northern flicker (Colaptes auratus), black-capped chickadee (Parus atricapillus) and house wren (Troglodytes aedon).
Few published records exist on the age of first breeding attempts for members of the woodpecker genus Melanerpes
. This information is lacking for the Golden-fronted Woodpecker (Melanerpes
The Golden-fronted Woodpecker Melanerpes
aurifrons, the Curve-billed Thrasher Toxostoma curvirostrae, the Bewick's Wren Tryomanes bewickii, the Canyon Wren Catherpes mexicanus, the Empidonax flycather, the Nasvhville Warbler Vermivora ruficapilla, the Violet-crowned Hummingbird Amazilia violiceps and the Rufous Hummingbird Selasphoros rufus were commonest in Ipomoea/small-leaved forests (Table 3), while the Ladder-backed Woodpecker Picoides scalaris, the Canyon Towhee Pipilo fuscus, the Greenish Elaenia Myiopagis viridicata also common in small-leaved tree forest) were equally or more abundant in mixed woodlands (Table 3).
In the South Pacific area of Costa Rica it is possible to find two species of woodpeckers: Melanerpes
rubricapillus (Cabanis, 1862) and M.
Northern flicker (Colaptes auratus) and red-headed woodpecker (Melanerpes
erythrocephalus) were the only two species not observed in unburned forest; both species were predominantly found at low severity and high severity burned sites.
Red-headed woodpeckers (Melanerpes
erythrocephalus) move from open habitats into bottomland hardwood forests during the winter.
pici incluye a aves de los generos Ayndesmus, Colaptes, Dendrocopus, Dryocopus, Megalaima, Melanerpes
, Picoides, Picus, Sphyrapicus y Zoothera (Thompson 1950, Castro y Cicchino 1978, Rekasi 1993, Palma y Jensen 2005, Gonzalez-Acuna et al.
We speculate that an increase in availability of dead ash trees (Fraxinus spp.) due to damage by the emerald ash borer (Agrilusplanipennis), as well as a potential increase in natural cavities due to an increasing Red- bellied Woodpecker (Melanerpes
carolinus) population might explain our findings.
The woodpecker species found in MHNP are scaly-bellied woodpecker (Picus squamatus), lesser golden-backed woodpecker (Dinopium benghalense; Linnaeus); Sind pied woodpecker (Dendrocopos assimilis), Himalayan woodpecker (Dendrocopos himalayensis), Rufous- bellied pied woodpecker (Dendrocopos hyperythrus hyperythrus), yellow fronted woodpecker (Melanerpes
flavifrons), brown-fronted woodpecker (Leiopicus auriceps), fulvous-breasted woodpecker (Dendrocopos macei) and grey-capped pygmy woodpecker (Dendrocopus canicapillus).