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Budgie Aggressive Behaviour

Budgies are rarely aggressive by nature: their burst of temper will come and go quickly. They will fight over food, and will often clash briefly over friends, toys or territory; but this is all a normal part of budgie society. Ninety-nine percent of the time, this surface level of social aggression is to do with food, personal space or mating. A cock bird will jealously guard his hen during the nest-building and mating period. A hen bird will become territorial and relatively aggressive during this period, too. As long as things don’t get out of hand, it’s nothing to worry about.

If the birds’ aggression is focused on one increasingly intimidated individual, it may become necessary to separate them. On rare occasions this can happen when two birds are simply not compatible, for reasons we can’t fathom. This is unfortunate if they are your only two birds, but the only constructive thing to do is to cage them separately, and try to reintroduce them at a later date, first by putting the cages side by side and then, if that goes well, allowing them to cohabit once more.

With mating season testosterone bubbling in his brain, a dominant cock bird might try to make life miserable for his neighbours. Similarly, a hen with nesting on her mind may become short-tempered too. It’s important not to over-react in these circumstances – the birds' madness will disappear once the mating urge has passed, and as long as it’s not one timid bird taking all the grief, the flock will sort its problems out without you having to intervene. If a single bird is being bullied all the time, you may have to remove it while the aggressive one is attempting to be king or queen of the roost.

budgie aggression
An aggressive bird will use his beak as a weapon

Budgie Dominant Behaviour

A dominant bird, whether cock or hen, will show aggression by squawking and biting. It will often raise its wings as it squawks – the kind of behaviour you encounter daily if you keep lots of budgies in an aviary and watch them taking their very uncivilised, bickering breakfast!

Spotting aggression in a budgie may be tricky for beginners, as the birds are often hyperactive, vocal and socialising physically without being aggressive. Here are some tell-tale signs to look out for:

  • Raised wings – the budgie equivalent of raising your fists.
  • Hissing – the throaty hiss of the budgie says “keep away!”
  • Biting another bird’s feet – this is never done as part of a mutual grooming session, and is always meant aggressively.
  • Picking at another bird’s feathers or head – if done gently, with a happy recipient, this is simply mutual grooming, which is what contented birds do. If the action is violent, you’re witnessing a fight. It will usually fizzle out once the less dominant bird has had enough and retreats.
  • Chasing birds around the cage – if an aggressive bird pursues another individual for any length of time, you might have a problem on your hands. If this happens regularly, one of the two birds will need isolating for a week. Keep a close eye on the birds once they have been reintegrated.
  • Not letting another bird eat or drink – small outbreaks of bad temper around food and water are normal. Providing more than one feeding station – or a sufficiently big one – usually sorts this problem out. If a budgie is going out of his way to keep another bird from feeding for any length of time, you have a similar problem to the chasing issue mentioned above.
  • Targeting a new bird – a restocked flock will need to find its own balance. Keep an eye on behaviour, and only intervene if there is persistent, detrimental bullying. Jealousy may be an issue in a smaller cage set up – your established bird may resent the attention you are giving the newcomer. Keep the older bird happy with finger treats and attention, and his tantrum should subside.
  • Defending a perch or food bowl – this is usually a symptom of overcrowding. Make sure you’ve given your birds enough space and provided plenty of different perches and bowls.

budgie open beak aggression
Budgies will defend their territory if the cage is overcrowded

  • Biting your finger – your hand may become a target if inserted into an angry budgie’s cage, but a budgie’s beak (unlike larger members of the parrot family) cannot inflict much damage on an adult hand. Children might find it off-putting, however, if their beloved pet launches an attack on their inserted finger. Discourage them from interfering with a grumpy or dominant bird. If he’s been finger-trained, some gentle belly-stroking will often calm the budgie down, or he will hop onto your finger and nibble the spray of millet you’ve very thoughtfully wedged between your forefinger and thumb.

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Comments Leave a comment

Anon, 22 September 2021

Try putting them in separate cages right next to each other. They should soon bond. If they don't then they are just incompatible.


Floyd, 20 September 2021

It's September 19th, 2021 and it looks like no one is answering any of these very interesting questions going back to March or earlier. I'm on the verge of removing an aggressive parakeet now, and was hoping to see how others dealt with it.


Beverly, 19 July 2021

Hi would like some advice please, we bought a 5 month male budgie which seemed lonely, so by the time he was 7 plus months we purchased another budgie that we believe is a female who was also 5 months , they seem to argue and bicker and sometimes sound very cross with each other, they tend to give a lot of warning peck at each other and the female will jump on the males back and if the male goes to eat , the female will try and stop him, the female constantly pesters the male who is more placid and quiet The female is lively , on the other hand we keep thinking that it’s going to turn nasty and blood will be drawn , be great full for advice as a little worried about them , many thanks !


Lisa, 25 June 2021

I have2males both 9 weeks from hatch in the same cage. One of the birds is very loud squawking and dominant in bursts with the food. He keeps scratching in the food and not eating until he is ready. Keeps the other one away. I have lessened there food and sticky taped the lid. I think he is put out by the other bird. He pushes the other bird away. They can perch together nicely.


Bunny, 5 June 2021

We got 2 rescue budgies they are both males we have had them for 6 months or so they are both in the same large cage but just recently they started fighting my husband has actually had to break them up i bought them a new toy recently could they be fighting over that toy they have never fought before i am desperate for info please i luv my budgies