My baby budgies are chirping at night. Should I be concerned?

It might be that he's not actually completely asleep, or he's just having a good dream! If he's otherwise healthy, active and normal, I wouldn't be too concerned. However, if you are seeing any signs of illness while he is awake such as lethargy, puffed feathers, not wanting to eat or drink, trouble breathing, etc, then this may be a sign there is something underlying which should be checked out by a vet.

Provided Boo Boo is still eating, drinking and flying normally and provided she is feeding her babies, I would not be too concerned. However, if she becomes lethargic or if her appetite decreases, I would recommend she be seen by a veterinarian who is familiar with working with birds.

It would be hard to say without more context. Baby birds can click their beaks together if they're begging mom or dad for food. They may also just open their mouths to yawn and stretch. If the mouth is staying open and they are panting, it can indicate stress or overheating. If the babies are otherwise acting healthy it may just be normal behavior, however if you see any signs of illness such as lethargy, puffed feathers, refusing to eat, etc, then having them looked at by a vet is best.

A sudden voice change can sometimes indicate an issue such as a problem with the throat or surrounding tissues with impactions, or fungal/bacterial infections. I would keep an eye on your budgie and if she continues to sound odd for more than a day, or shows other signs of illness such as not eating, vomiting, changes in stool, etc, seek out veterinary care in person.

If Floki is otherwise happy, active, eating and drinking, and growing, I wouldn't be too concerned. Birds are very active and lively, and it could be that Floki is showing you his excitement. Spending some time together bonding, or offering a fun toy he can play with may help. If he does show any signs of illness with this, becomes listless, or otherwise seems very stressed out, a vet visit to rule out any health issues is always a good idea.

It's possible there is something caught in her crop or she is regurgitating food into her mouth and then swallowing it. If the behavior continues or you see other signs of illness such as changes in weight, eating and drinking habits, behavior, etc, then having a vet take a look to rule out any more serious health issues is best. Sometimes, night frights may wake a bird up at night and cause them to make strange sounds as well. Covering the cage or leaving on a lamp on low (low enough to comfortably rest but not so bright it keeps your bird awake) may help with this and allow Lola to relax.

Since the birds are new to you (and I am assuming new to each other) they are probably a little stressed and taking time to adjust to their new surroundings. Also, since they are new to you, this may be completely normal behavior for them. You may want to try separating them and see if that helps. If they are eating and drinking well, do not appear to be injured and are having normal excrement then I would not be too concerned. They most likely are stressed and just need time to adjust to their new normal. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Bestnof luck.