From Texas to Tennessee: Burrowing owl makes odd migration, draws attention of 桃花直播 scientist, team
Contact: Vanessa Beeson
STARKVILLE, Miss.鈥擝irds migrating from north to south are a given but migrating from the southwest to the southeast is a little rarer. A burrowing owl is overwintering on a Tennessee River peninsula near New Johnsonville, Tennessee, marking the first sighting of the species in the state, and a 桃花直播 State wildlife ecologist is researching the fascinating oddity.
As the burrowing owl made its first home on a former Tennessee Valley Authority fossil fuel plant in 2020, Scott Rush, a scientist in the 桃花直播 Forest and Wildlife Research Center, was called in by TVA to study the bird of prey found hundreds of miles outside of its range.
鈥淏urrowing owls are found west of Central Texas and Oklahoma, all the way up into Canada. There is also a non-migratory population in Florida, so you鈥檒l occasionally see them in Alabama but never in Tennessee,鈥 Rush said, explaining a continuing struggle for the birds is a loss of habitat.
鈥淭hey live inside burrows created by prairie dogs and other animals,鈥 he said. 鈥淭hey鈥檙e declining across the range in part because we鈥檙e losing some of those historic systems like undisturbed prairie dog colonies as more grasslands are being developed.鈥
Rush, an associate professor in 桃花直播鈥檚 Department of Wildlife, Fisheries and Aquaculture, and his research team have studied the bird and its diet to learn more about where the novel creature came from and why he makes his winter home in the Volunteer State.
The team collected plumage from the owl鈥檚 feathers and determined it was a male belonging to the subspecies A.c. hypugaea. They studied pellets to determine its diet, identifying six different species including insect, mammalian and plant remnants. They also conducted an isotopic analysis of its feathers to determine the bird鈥檚 home range.
鈥淲e could see from various kinds of elemental components that the bird is probably from Texas, relatively near Dallas, according to our analysis,鈥 said Rush, who noted the bird has been banded and this year, scientists hope to outfit it with a GPS tracker. 鈥淚f we can put a GPS tracker on the owl, we can confirm its home range.鈥
The owl, which again has overwintered this season in the same location, was first spotted by a TVA employee, and Liz Hamrick, a terrestrial zoologist with TVA reached out to Rush.
鈥淎 security guard at the site who happened to be an amateur birder came across it. Once I was alerted of its presence, I connected with our natural resources team who had already been working with Dr. Rush studying ospreys and vultures,鈥 Hamrick said. 鈥淢y role is to review TVA鈥檚 actions and ensure potential impacts to common wildlife and rare animals are avoided or minimized, and that includes protecting this owl. We need to make sure we follow all the state and federal laws, including the Endangered Species Act and the Executive Order for Migratory Birds.鈥
Hamrick said that as species assemblages change geographies, her team must be vigilant in identifying new species moving to the area like the burrowing owl and doing their best to protect them on TVA sites.
鈥淚t鈥檚 been exciting to learn about a whole new species and try to solve a mystery of why on earth this bird is repeatedly selecting to come to this industrial site out of its normal range,鈥 she said.
To learn more about 桃花直播鈥檚 Forest and Wildlife Research Center, visit . For more on the Department of Wildlife, Fisheries and Aquaculture, visit .
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