hi, it started with a really bad fight as I bought a nest box. The two hens bite them in their feet and head on the floor. I tried to seperate them and they bite my fingers bloody. I did not know that they can harm themselves so much. Their feet were bleeding too. Then I put the nesting box in a separte big cage. In this cage live now mother hen, dad and 4 youngsters. The oldest one is 3 weeks old.

in a another more big cage lives the aggressive hen, a shy hen, a very smart active hen, and a cute hen with standing feather on the head. So u can see I just have one male.

the attacking hen stoped the attacks over time. Now I dont know what happened again. They are allowed the whole day. So the aggressive hen attempts to get in the mothers hen cage to the nest box. Mum hen of course is defending. They again bit theirselfves bloody. I dont know why she wants to badly get into this cage! is she curious about the chicks, does she want to kill them? but she does not stop trying it, mum hen does not stop defending.

so I took my aggresive hen to a one more separete cage. She is getting nuts in it, running from one corner to the other. She wants to get out, she is not used to be closed.

 

pls what can I do?

Hi. You should only have the breeding birds SEPERATE from the others. Even if they are all happy and calm for a while, when you breed budgies in a aviary with more than 1 hen they will always eventually start fighting......If the aggressive hen gets into  the nest box with the chicks she will KILL them. I'm not guessing okay, I know from 20 years experience. It can help to have lots of boxes to choose from but when you see that behaviour and you have chicks in the nest , the aggressive hen has decided that she wants the box and her intention is to kill the babies and take the box for herself. In this situation you should take out all other hens apart from the mum or baby hens and when the chicks are old enough take out the box so she cant lay anymore. If you want to breed later on then only breed her in a separate cage with the dad. Its also a good idea to limit breeding to the cooler months (in Aust) which gives the birds  break and the babies and parents are healthier as a result.   

hi thank you. Mum Dand and the 4 youngsters are in a separate cage. The other budgies are in another cage. Problem is they are in one room. And even if I close the cage from the parents, he yellow not breeding hen comes to their cage. The hen then comes to the grid with her feet. And they bite each others feet one frominside one from outside.

Unfortunately I just have one room and a kitchen. Actually only possibility is to sell the not breeding hen I think?