Dry Forest This forest type typically experiences an annual hard
dry season. The average rainfall is sufficient enough to promote growth
of trees, but these tree and plant species must be able to withstand periods
of low precipitation and moisture. Many of the tree species in dry forest
are also deciduous. During the driest months these species will drop their
leaves much in the same manner that northern deciduous forest species loose
their leaves in the fall and winter. This dry season leaf-drop reduces the
water needs of the plant, as there is no evapotranspiration through the
leaves. Much of the dry forests of Mexico and Central America have been
converted into cattle ranches and planted in exotic grasses. These introduced
plant species provide forage for livestock, but in turn, change the habitat,
and displace native forest species. These native plant species are what
comprise the forest habitat needed for both the plants and animals that
form the dry forest ecosystem.
The Yellow-naped Parrot (Amazona auropalliata) is one of several parrot and parakeet species occurring in the region. Yellow-napes are a larger type amazon parrot. They are not nearly as numerous as the smaller, and more screeching White-fronted Parrot. Yellow-napes have a rich tonal voice, it is truly one of the more evocative sounds of the dry forest. Amazon Parrots such as the Yellow-naped are prized as pets, and when young can learn a variety of sounds and words. Pressures such as capture for the pet trade and habitat loss, are threatening many species of parrots with extinction. Certain species of parrots from South America are on the verge of extinction, others such as the Spix's Macaw, only exist in Zoos and private collections.