A Kolea with a leg injury, but can still fly, is nearly impossible to catch for treatment.
If the bird cannot fly, and you can catch it, put the Kolea in a ventilated shoebox or pet carrier and bring it to Feather and Fur Animal Hospital in Kailua.
www.featherandfur.com
(808) 254-1548
Veterinarians there will determine if rehabilitation is possible. If so, Hawaii Wildlife Center will take care of the bird until it can fly and forage.
www.hawaiiwildlifecenter.org
(808) 884-5000
On Kauai, the organization, Save Our Shearwaters, located within the Kauai Humane Society, helps all injured native birds, including Kolea. Call for instructions.
https://saveourshearwaters.org
(808) 635-5117