Formerly bonded love birds fighting and resource guarding
I have a pet sitting customer with two love birds who are several years old. They’ve been together a long time without any issues. About a year ago one of the birds (green & yellow) was injured. It got stuck in a cage toy, and neede veterinary care. Over the last year we’ve noticed one of the birds (yellow & green) is losing more feathers than normal, like the other bird is pulling out its feathers, and it appears the two birds are fighting. One bird (green & blue) will chase the other bird (green & yellow) away from food and water, and attack if the green & yellow bird is inside any of their sleeping coconut-huts. Like the Blue & green bird is “resource guarding”. Blue and green also chases green & yellow around the cage, and they are beak fighting.
My customers do have a separate cage they can utilize, but were worried about the birds being stressed if separated. Should we park the cages side-by-side so they can still see one another but the green & yellow bird will be protected?