New Research to Address Declines Linked to Roost Sites

New Research to Address Declines Linked to Roost Sites
The NWTF is funding a new wild turkey research project in the Texas Rolling Plains Ecoregion, located in the north-central part of the state.
The project will help the Texas Parks and Wildlife Department better understand changes in available roosting habitat over the last 20 years and how roost sites are negatively impacted by encroaching invasive vegetative species, like Russian olive and salt cedar. The research will utilize state-of-the-art imaging techniques to classify over 20 years of landscape-scale data. It will also provide insight into future management needs, helping slow the spread of invasive species and bolstering Rio populations in the region.
“TPWD, NWTF and Texas A&M University are collaborating to take a closer look at larger landscape habitat changes,” said Jason Hardin, TPWD wild turkey program leader and co-chair of the NWTF Technical Committee. “The focus of this work is on the potential loss of wild turkey roosting cover, primarily cottonwood trees in the Rolling Plains, which may have been exacerbated by the 2011 drought. These partners will examine changes in brush cover along the riparian corridors where wild turkeys are primarily found in the Rolling Plains. TPWD and NWTF have a keen interest in finding answers so that we can provide management options to landowners in this historic stronghold for wild turkeys.”
(Photo Credit: Darcy Daniels)
The Rolling Plains region is characterized by its gently rolling open-country landscape, interspersed with rivers and streams. The waterways (riparian areas) provide essential habitat for the Rio Grande wild turkeys that inhabit the area. These riparian areas, however, are where much of roosting habitat is diminishing.
With no shortage of predators in the region, Rio Grande wild turkeys are particular about their roost sites. Rios like to roost in large trees, both in diameter and height. Previous research found the birds’ average preferred roost tree size was about 45 feet tall and about 23 inches in diameter.
What’s more, even if trees fit the size preference for Rios, if invasive brush has taken hold, Rios will often avoid roosting in those trees, likely to avoid predators lurking in the brush. The brush is also poor for the overall health of trees like the cottonwood. The woody vegetation encompasses the tree, competing for water and nutrients and making the trees more susceptible to damage from fire and other disturbances. Read more







