Desert bighorn sheep are comeback kids
By Ron Henry Strait;mysanantonio.com
A thousand feet above the valley floor, a Texas Bighorn Society work crew builds a water collection guzzler in the Sierra Diablo Mountains.
.The desert bighorn sheep is the comeback kid among Texas big game animals.
In its fight to maintain a precarious foothold in its native mountain ranges in arid West Texas, the magnificent beast has taken some critical body blows over the past century. During the nation's westward expansion in the 1800s, the wild sheep were used for food by the pioneers and work crews who first crossed the purple-hued mountains west of the Pecos. Later, the introduction of domestic sheep into wild sheep habitat brought exposure to diseases that decimated the bighorn herd.
Modern times brought modern issues, including roads, fences and others facts of civilization that further isolated populations and restricted herd interchange.Where, at one time, there were an estimated 2,000 desert bighorn sheep in 15 Texas mountain ranges, by 1958 the last of the native herd was gone. With that loss, it seemed the fight was over for the state's rare, reclusive sheep.
That was hardly the case. The legacy of Texas wild sheep remained alive, embedded in memories, anchored in history and nurtured by a chorus of state biologists who knew the desert bighorn still had a place in those purple mountains on the horizon The sheep had another friend in their corner of West Texas, too, and more help was on the way.
About the time that the last wild sheep was lost, the Texas Parks &; Wildlife Department began a restoration effort, transporting 13 desert bighorns to Texas from southwest Arizona. More sheep came in the 1960s and '70s from Mexico and Nevada to Black Gap Wildlife Management Area, a 100,000-acre state property south of Marathon. By 1993, there were about 400 sheep restored to West Texas. That herd was expanded into Elephant Mountain Wildlife Management Area, a 23,000-acre state property south of Alpine, where herd numbers continued to grow.
Surplus animals were then trapped and transported to other historic ranges. Today, the state's desert bighorn sheep herd numbers about 1,200 animals, said Fraylon Hernandez TPWD's desert bighorn sheep program leader. They have been re-established in seven historical sub-herds, all on state land. Those herds are in the Beach, Baylor, Sierra Diablo, Van Horn Eagle Black Gap-Del Carmen, Elephant Mountain and Bofecillos mountain ranges.
The remaining native habitats, identified by records of old surveying crews and historical recollections of ranchers and biologists, are located on private property."The population today is down from about 1,500 sheep a couple of years ago because of the drought and heat," Hernandez said. "But it is stable. The lamb crop (survival) was down to 15-20 percent. It's usually 30-40 percent."
The restoration of sheep in the last two years to the Bofecillos Mountains in Big Bend Ranch State Park has included more than 140 sheep, Hernandez said. More sheep will be placed there, and Black Gap WMA might receive an additional 40 sheep as surplus animals become available. Most of those sheep are from herds that roam private ranches.
Hernandez sees the isolated dispersal of sheep populations in simple, best-practices terms: "We don't want all our eggs in one basket, so we have them in a lot of baskets."
There are more baskets to restore in the remaining eight historical ranges, which are on private ranches, he said.With a long-term restoration plan in hand, the biologists early on identified water among the critical habitat needs in the comeback of the desert bighorns. But resources — mostly money and manpower — were in short supply.
Stepping into the ring in both regards was the Texas Bighorn Society, founded in 1981 as part of the Foundation for North American Wild Sheep. By 1985, TBS had established its own identity and now has about 600 members, with David Wetzel as its president. "Our role is to support the restoration," Wetzel said. "We let TPWD direct our efforts. We have invested about $2 million in the bighorn restoration project."In the past quarter-century, TBS has also contributed thousands of hours of sweat equity to the effort, primarily in the form of the group's annual work project. Many of those projects include the building of isolated, high elevation water-collection facilities known as guzzlers.
And there is more: "We have dedicated $20,000 a year for work by a (Sul Ross State University) graduate student who is studying the sheep released at Big Bend Ranch," Wetzel said. "He is doing GIS-mapping habitat research. The research will help determine where the next transplant will be done."Hernandez said some future transplants will be to private ranches and acknowledged that effort will have its own challenges.
"All (suitable) state lands will have plenty of sheep," he said. "After that, we'll go to private land. Our goal is to restore sheep to their native habitat."Many of the sheep used in the restoration project have come from private ranches"The restoration depends on a combination of factors," Hernandez said. "Landowners are the key."Wetzel echoed that sentiment: "Private landowner efforts are an important part why the restoration has worked. Those efforts are appreciated."
Modern times brought modern issues, including roads, fences and others facts of civilization that further isolated populations and restricted herd interchange.Where, at one time, there were an estimated 2,000 desert bighorn sheep in 15 Texas mountain ranges, by 1958 the last of the native herd was gone. With that loss, it seemed the fight was over for the state's rare, reclusive sheep.
That was hardly the case. The legacy of Texas wild sheep remained alive, embedded in memories, anchored in history and nurtured by a chorus of state biologists who knew the desert bighorn still had a place in those purple mountains on the horizon The sheep had another friend in their corner of West Texas, too, and more help was on the way.
About the time that the last wild sheep was lost, the Texas Parks &; Wildlife Department began a restoration effort, transporting 13 desert bighorns to Texas from southwest Arizona. More sheep came in the 1960s and '70s from Mexico and Nevada to Black Gap Wildlife Management Area, a 100,000-acre state property south of Marathon. By 1993, there were about 400 sheep restored to West Texas. That herd was expanded into Elephant Mountain Wildlife Management Area, a 23,000-acre state property south of Alpine, where herd numbers continued to grow.
Surplus animals were then trapped and transported to other historic ranges. Today, the state's desert bighorn sheep herd numbers about 1,200 animals, said Fraylon Hernandez TPWD's desert bighorn sheep program leader. They have been re-established in seven historical sub-herds, all on state land. Those herds are in the Beach, Baylor, Sierra Diablo, Van Horn Eagle Black Gap-Del Carmen, Elephant Mountain and Bofecillos mountain ranges.
The remaining native habitats, identified by records of old surveying crews and historical recollections of ranchers and biologists, are located on private property."The population today is down from about 1,500 sheep a couple of years ago because of the drought and heat," Hernandez said. "But it is stable. The lamb crop (survival) was down to 15-20 percent. It's usually 30-40 percent."
The restoration of sheep in the last two years to the Bofecillos Mountains in Big Bend Ranch State Park has included more than 140 sheep, Hernandez said. More sheep will be placed there, and Black Gap WMA might receive an additional 40 sheep as surplus animals become available. Most of those sheep are from herds that roam private ranches.
Hernandez sees the isolated dispersal of sheep populations in simple, best-practices terms: "We don't want all our eggs in one basket, so we have them in a lot of baskets."
There are more baskets to restore in the remaining eight historical ranges, which are on private ranches, he said.With a long-term restoration plan in hand, the biologists early on identified water among the critical habitat needs in the comeback of the desert bighorns. But resources — mostly money and manpower — were in short supply.
Stepping into the ring in both regards was the Texas Bighorn Society, founded in 1981 as part of the Foundation for North American Wild Sheep. By 1985, TBS had established its own identity and now has about 600 members, with David Wetzel as its president. "Our role is to support the restoration," Wetzel said. "We let TPWD direct our efforts. We have invested about $2 million in the bighorn restoration project."In the past quarter-century, TBS has also contributed thousands of hours of sweat equity to the effort, primarily in the form of the group's annual work project. Many of those projects include the building of isolated, high elevation water-collection facilities known as guzzlers.
And there is more: "We have dedicated $20,000 a year for work by a (Sul Ross State University) graduate student who is studying the sheep released at Big Bend Ranch," Wetzel said. "He is doing GIS-mapping habitat research. The research will help determine where the next transplant will be done."Hernandez said some future transplants will be to private ranches and acknowledged that effort will have its own challenges.
"All (suitable) state lands will have plenty of sheep," he said. "After that, we'll go to private land. Our goal is to restore sheep to their native habitat."Many of the sheep used in the restoration project have come from private ranches"The restoration depends on a combination of factors," Hernandez said. "Landowners are the key."Wetzel echoed that sentiment: "Private landowner efforts are an important part why the restoration has worked. Those efforts are appreciated."
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