Why is my injured goose suddenly hostile and biting everyone?

I would be concerned there is an injury to the leg, such as a sprain, break, or wound, or even a neurologic/muscular issues that could be affecting her legs. If it's been going on for several months without improvement, it would be best to have a vet take a look in person to rule out any treatable issues. If no problems can be found or treated, and she is able to get around and is still eating and drinking, making sure she has easy access to food and water, and isn't being picked on by the rest of the flock may help make things easier.

If Tootoo was otherwise happy and calm around family, but recently began to bite there are a few possibilities. One can be pain or underlying illness, which may cause behavioral changes such as sudden aggression as a way to hide illness. A vet checkup to rule out any health issues is always best. Being startled or scared by something may also cause a bird to lash out or become more aggressive, such as if a new family member or pet was introduced, new items, or even loud or strange noises. Giving Tootoo some time to relax and settle down, and then gradually regaining trust with treats and toys may help decrease aggressive behavior. Birds that want to mate may become aggressive toward family they see as "competition" to a mate (or someone they consider a mate, such as a family member). Discouraging this behavior by stopping contact when he becomes aggressive, not giving attention to perceived mating behaviors, or using toys and treats to discourage and distract from bad behaviors may help.

It could just be that Gerald isn't used to being handled and so is fearful. If they are otherwise OK and acting normal and healthy outside of you picking them up, that is likely the case. You can help Gerald get used to you by offering a favorite treat every time you approach, working on petting/handling while feeding the favorite treat, then offer the treat when you pick them up. If Gerald gets stressed at all during this, going back to the thing they were most comfortable with (petting, being fed, etc) and working back up from there can help.

This sounds like a nutritional issue. What are you feeding him? Geese need to eat waterfowl food and not chicken feed. If you are feeding chicken feed then he is probably deficient in niacin. If you would like to post again with more information you can and we may be able to help more. If you would like some more one on one help you can always opt for a private consultation with me.

Thanks for reaching out. A veterinary visit is needed to control infection but also for the possibility of a prosthetic. You might have to syringe feed and offer water to provide energy and hydration. Good luck.

Thanks for reaching out and including photos. Training birds can be difficult, especially as they reach sexual maturity. Continue with the training process and establish a dominance hierarchy with you primary. A book titled "A Guide to a Well Behaved Parrot" is a good start. Good luck.

Thanks for your question about Sunny. I am glad that you asked your question, because abrupt behavior changes are a cause for concern. Often these are related to illness, and this could be occurring even if Sunny doesn’t look sick to you. I would recommend having him evaluated by a veterinarian to see if they find any reasons for the aggression. They may recommend diagnostic testing depending on what they find, or they may prescribe some medications as well. Please don’t give Sunny any human medications at home, as many of these are harmful to our feathered friends. I hope that gives you a place to start, and thanks for using Petco Pet Education Center, formerly Petcoach.