NWTF
Turkey Facts: Wildly Different: Rio Grande Subspecies
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Credit:
Albert Lavallee/National
Wild Turkey Federation
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Rio
Grande Wild Turkey
(Meleagris
gallopavo silvestris)
The
Rio Grande wild turkey is native to the central plains states and got its
common name from the area in which it is found - the life giving water
supply which borders the brushy scrub, arid country of the southern Great
Plains, 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.
It
is similar in general appearance to the other subspecies of the wild turkey
and similar in body size to the Florida Turkey, about 4 feet tall, but
with disproportionately long legs. The Rio Grande turkeys are comparatively
pale and copper colored. They are distinguished from the eastern and Florida
subspecies by having tail feathers and tail/rump coverts tipped with yellowish-buff
or tan color rather than medium or dark brown. Although there has been
more variation in the shade of buff/brown in the tail feathers among Rio
specimens, the color is consistently lighter than in the eastern or Florida
birds and darker than the same feathers in the Merriam's or Gould's subspecies.
Adult
females, called hens, are smaller in size compared to the males, called
gobblers, and similar in color but duller. Hens average 8 to 12 pounds
while gobblers may weigh around 20 pounds at maturity. Feathers of the
breast, sides and flanks are tipped with pale pinkish buff.
The
Rio inhabits brush 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.
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