Vet technician Alejandra Olvera gently holds a barn owl still while Mark Conway attaches an identification tag to its leg at Gladys Porter Zoo. (AP)
Mr. Conway uses a measuring stick to quickly measure each of its wings. (AP)
To keep track of the owl, researchers use an ID tag on its leg. (AP)
An unhappy barn owl flaps its wings as vet technician gets it ready to be banded. (AP)
The heart-shaped feathers on its face catch sound so the barn owl can hear the animals it hunts. (AP)
People found fluffy baby barn owls. Vets at a zoo took care of them. The birds grew strong. They learned to hunt outdoors. Vets put metal tags on the owls’ legs. They set the birds free.