Why is my budgie suddenly biting? Is it due to heat, stress, or tiredness?

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.

Without the owner's permission, there may be very little that you can do other than impress upon them that their pet may be quite ill. The panting and clicking could be due to respiratory infection. The biting of the legs may be due to infection or parasites and the other issues are due to general husbandry.

It sounds like your bird may not be comfortable yet with being handled around the cage. Stress and feeling unsafe can cause a bird to lash out, and it may be that they feel you are intruding on their space or are going to harm them when you get close. Taking some time to bond while your bird is in its cage may help. If he or she has a favorite treat, begin by offering it every time you approach the cage, and only at these times. This will help your bird start to associate your arrival with good things, rather than scary. Once used to you just tossing in a treat every time you come by, you can then move on to opening the cage and offering the treat from your hand, petting your bird, etc. If they become too scared, try to bite, or seem very stressed out, move back to the previous step that worked and try again from there. Making sure the cage itself is kept in a stress-free and quiet environment where other pets, people, etc can't bother it can also help reduce stress and make the space more comfortable and relaxing. Bonding does take time, and it may take days, weeks or even months on each step to build that trust! Be patient, and try not to be discouraged if you don't see immediate changes.

It is possible he's a bit bored or anxious, and that's why he's continuing to bite you even with training. You can try offering him a treat or toy to put into his mouth while you handle him to give him a chance to bite down on that instead of nibbling on you! Keeping him on your arms away from your face or shoulders and away from perches where he can reach down and bite you may also help reduce it. If the behavior continues, talking to a local animal behaviorist near you may also help. It's also a good idea to rule out any health issues if the biting came on suddenly, or if you're noticing any other changes in behavior or health status.

Biting can happen if Bright is feeling stressed or scared, or just isn't tame enough yet to be handled. If she lives with other birds, it could be she is more bonded to them so may not bond with you as closely. A good start is to offer her favorite treat every time you approach the cage, by tossing it inside. Once she is more used to you coming by, you can then start to offer it from your hand, and then continue working on taming her from there. If at any time she becomes stressed out or bites, taking a break to let her relax and trying again later can help. It can take time for a bird to get used to their owner, so patience is key. Making sure Bright isn't too stressed out from her cagemates, and that she has plenty of fresh food, water, and toys to play with can help as well.

If you've been working with him a lot on taming it could just be that he is finally getting used to you (this is good!) However, if you are concerned by his sudden behavioral change, or you are seeing any signs of illness, scheduling a vet checkup to rule out any health issues is always good.

Thanks for reaching out about Cactus. Could he be nauseous, trying to regurgitate? Fluffed up is a general sign of illness. Providing heat support in the 80-85 F range can give some aid. If weak, remove perches and place a soft towel on the bottom of the cage for comfort. Ensure that food and water bowls are within reach. Heavy metal toxicity (lead, zinc), metabolic disorders, ingested foreign bodies and infections are all possible. You need to see your veterinarian, to assess and provide a diagnostic/treatment plan. Good luck.