A missing Harris hawk could kill a cat or chickens if she remains on the loose, her worried owner fears.
The female hawk, which has a 3ft wingspan, broke its shackles at an address in Whaplode at the weekend and flew off from a garden perch.
Owner Nigel Hancock uses the hawk, called Harriet, to kill vermin including rabbits.
He said: “She is more than capable of killing a cat or someone’s chickens. I don’t want to scaremonger people too much.
“Usually she takes rabbits.”
The tree surgeon has hunted everywhere himself for Harriet since she went missing and has since reported her loss to the police.
He is asking anyone who sees the hawk to contact Spalding Police Station on 101.
Mr Hancock says the bird is not a danger to people.
The bird escped on Saturday night or Sunday morning.
He said: “She broke one of the shackles and came off the perch. She’s done a runner.”
Mr Hancock says Harriet is “a substantial bird”, weighing two-and-a-half pounds. She still had jesses – leather straps – attached to her legs when she flew off. Her owner also hunts vermin with a peregrine falcon.