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THE
BIRDS OF THE YUCATAN PENINSULA
By Barbara MacKinnon H.
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Turquise
browed - Motmot - Eumomota |
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The Yucatan Peninsula is high on the list of unique places to visit
for bid watchers. Altogether, 537 bird species,
belonging
to 74 families, have been registered within the three states of
Campeche, Quintana Roo and Yucatan.
Of
these, 58 are considered vagrants and occasional visitors. The
total species count represents 50% of all the bird recorded for Mexico
and 58% of the number of bird species registered in the United
States and Canada. |
The
already diverse local bird fauna is enriched measurably by the fact that
the peninsula serves as major thoroughfare for migratory birds headed
south in the fall and north in the spring. These long distance travelers
seek a reprieve from the harsh northern winters, spreading themselves
out all the way from southern Mexico to South America.
Altogether, 217
species from the north have found their way to the Yucatan, 35 as
vagrants and occasional visitors, while 128 overwinter regular each
year, including some with a year round resident population. Another
group of northern migrants, numbering 54 species, are predominately
transient though the peninsula, using it to rest and refuel before
continuing their journey. However, here again there are exceptions as
small populations of some of these birds overwinter while two species
maintain small breeding population during the summer months.
The high
number of vagrants to the region has to do with the combination of
tropical storms and "northers" during the speak of the fall
migration in September and October, which cause havoc with flight
plants. There are also unique but regular summer visitors from the Caribbean
area that include sooty and Bridled Terns, Brown Noddy and the
White-crowned Pigeon, that nest on offshore islands and atolls. Other
summer visitors include several flycatchers and a vireo, which fly north
from South America to nest during the northern hemisphere's spring and
summer months.
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The
Yucatan Peninsula regions is also unique for its number of endemic
bird species (14) and subspecies (aproxx.100), caused by its
relatively late emergence from the sea and isolation from the
interior of the country. Two more species are for the most part
confined to the peninsula, but have small disjunct populations
elsewhere. When speaking of the distribution of the region's
unique fauna, it is necessary to include the Peten regions of northern
Guatemala, parts of Belize and even, at times, the western part of
the state of Tabasco. |
Only Cozumel Island can
claim exclusive rights to 3 endemic species not found anywhere else in
the world; Cozumel Emerald, Cozumel Vireo and Cozumel Thrasher. It
is also home to the Caribbean species of Western Spindalis, found
nowhere else in Mexico, as well as the Smooth-billed Ani, which spread
to the mainland around Puerto Morelos as a result of Hurricane Gilbert
in 1988. There are a number of interesting endemic subspecies on the
island as well, including Cozumel Wren, Golden Walblers, Rufous-browed
Peppershrike and the Bananaquit, with is also found on the Quintana Roo
mainland coast.
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Yucatan
Vireo Magister |
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In
addition to the Cozumel specialties, the other 11 endemic species are
found throughout the region, as described above, including: Ocellated
Turkey, Yellow-lored (Yucatan) Parrot, Yucatan Poorwill, Yucatan
Nightjar, Red-vented (Yucatan) Woodpecker, Yucatan Flycatcher, Yucatan
Jay, Yucatan Wren, Black Catbird, Rose-throated Tanager and Orange
Oriole. |
The Black-throated (Yucatan) Bobwhite could also be considered
an endemic except for a few disjunct populations, including one in
Honduras. Another such species is the Mexican Sheartail, which apart
from the north coast of the peninsula is only found in central Veracruz.
The Affinity that the
coastal vegetation of the peninsula has with the Caribbean region
provides habitat for birds from that region that are found nowhere else
in Mexico. These include: Zenaida Dove, White-crowned Pigeon, Caribbean
Dove, Caribbean Elaenia, Yucatan Vireo, Stripe-headed Tanager, and,
unfortunately, of recent introduction, the Shiny cowbird The White-lored
Gnatcatcher has a n equally unusual distribution, found only on the
north coast of the state of Yucatan in eastern Mexico, while also
inhabiting parts of the west coast of Mexico and Central America.
THE
RESERVES OF THE YUCATAN PENINSULA
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There
are approximately 40 natural protected areas covering almost
9,000,000 acres on the Yucatan Peninsula. These sites include both
terrestrial and marine habitats, public and private reserves. In
addition, a total of 24 sites on the peninsula are federally
designated Important Bird Areas (IBAs). All but 17 species on the
Yucatan Peninsula bird list are found within natural protected
areas. This demonstrates the valuable role they play in conserving
habitat important to birds throughout the region. |
The beat way to see the
maximum number of species is to visit the reserves located within the
seven different zones outlined on the map appearing on the inside cover.
There include:
1.- The wetlands on the
southwest coast of Campeche, particularly in the area of Palizada in the
Laguna de Terminos Reserve.
2.- The forested hummocks
or petenes on the northwest coast of Campeche and Yucatan, as well as
the wetlands along the north coast on Yucatan from Celestun to El
Cuyo, as found in the reserves of Los Petenes in Campeche and Ria
Celestun and Ria Lagartos in Yucatan.
3.- The interior of the
state of Yucatan, where low scrub forest predominates, is well
represented in the Cuxtal Municipal Ecological Reserve on the south side
of the city of Merida.
4.- The north and east
coast of Quintana Roo from Isla Holbox in the Yum Balam Reserve, to
Xcalak on the Belize border. This area includes the seabird rookeries of
Isla Contoy along with the coastal forest influenced by Antillean
species, as found in the Sian Ka'an Biosphere Reserve and along the
entire coast of the mainland to Scalak.
5.- The island of Cozumel,
which incorporates several protected areas including Chankanab Lagoon
and Park and the Colombia Lagoon Reserve.
6.- The forested interior
of central and northern Quintana Roo, including the northeast corner of
the state of Yucatan. The interior parts of both the Sian Ka'an and Ria
Lagartos reserves are representative of this vegetation.
7.- Along the base of the
peninsula, where rainfall is greater and the forest is higher, there is
a biological corredor that serves to mix the Yucatan fauna with that
from the Peten region of Guatemala. Consequentjy, the Calakmul Reserve
and surrounding area provides the opportunity to observe species not
found elsewhere on the peninsula

Some
Birds:
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Red-crowed-parrot
- Virigenalis |
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Ringed
kinfisher - Ceyle - Torquata |
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Ruddy
Ground Dove Passerina Pallescens - Male |
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White
winged Dove - Zenaida asiatica - Mearnsi |
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Yucatan
Jay - Yucatanicus |
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Red-crowed-parrot
- Amazona Automnalis |
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White
hawk - Leucopternis albicollis - ghiesbreghti |
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Yellow
-backed - oriole - Chrysanter |
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Turkey
Vulture - Cathares Aura |
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