Background
The
Rio Grande wild turkey is native to the semi-arid
areas of the southern Great Plains states: Texas,
Oklahoma, Kansas and Northeastern Mexico. It received
its common name from the Rio Grande River, which is
the water supply bordering the brushy scrub, arid
country of some of its prime range in western Texas
and northeastern Mexico. This subspecies was first
described by George B. Sennett in 1879 who said it
was intermediate in appearance between the eastern
and western subspecies, hence its scientific name,
Meleagris Gallapavo Intermedia.
Originally existing in the millions,
this turkey had depleted to extremely low numbers
by 1920. Formal programs involving trapping and transplanting
were initiated in the 1930's and today it exists over
much of its ancestral range. Texas has the most Rio
Grandes with a population estimated at over 600,000
birds.
Physical
Description
The Rio Grande turkey, at full maturity,
is approximately four feet tall with a slightly smaller
body size than the Eastern wild turkey. It is pale
and copper-colored having tail feathers and tail/rump
coverts (short feathers located at the base of the
tail) tipped with a yellowish buff. An alternating
color pattern includes tan feathers with medium or
dark brown buffed tips. The Rio Grande’s color is
consistently lighter than the Eastern or Florida bird,
but is darker than the same feathers in the Merriam
or Gould subspecies. Feathers of the hen breast, sides
and flanks are tipped with pale, pinkish buff.
Range
& Habitat
The Rio Grande turkey was originally
found in the southern Great Plains, western Texas
and northeast Mexico. They have expanded their range
and been introduced into Nevada, Oregon, Washington,
Wyoming, Utah, South Dakota, and California. This
race of turkeys generally occurs in areas having 16
to 32 inches of rainfall.
The Rio inhabits brushy areas near
streams and rivers or mesquite, pine and scrub oak
forests. It may be found up to 6,000 feet elevation
and generally favors country that is more open than
the wooded habitat favored by its eastern cousins.
The Rio Grande is considered gregarious and, nomadic
in some areas, having distinct summer and winter ranges.
They may form large flocks of several hundred birds
during the winter period. It has been known to travel
distances of 10 or more miles from traditional winter
roost sites to its nesting areas. Since the areas
they are found usually do not have many roosting trees,
they will often use the same tree which makes finding
them a lot easier. Their range in a lot of cases is
determined by the location of their preferred roosting
tree, the cottonwood.
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