Aggressive hen tiel

Question
QUESTION: Hi
I have a 6 year old female cockatiel and a 1 year old female cockatiel
They share a cage and have shared it for almost a year. The cage is 3ft x 2 ft x 3ft

As of a few days ago, Gabi (the 6 yr old) has been chasing Willow (1 yr old) and pulling her feathers, not letting her eat or drink, etc.

I have no idea why :(
WhT could be the reasons?

At the moment I have Gabi separated from Willow.

ANSWER: You've just described rather typical territorial behavior.  Willow has become sexually mature and Gabi is keeping her out of her space, or trying to.

I always keep psittacines (parrots like 'tiels and others) separated, but in the same room so they can still enjoy each others company.  It's really safest this way - and they are more likely to stay bonded to YOU.

 Take a look here for pics of the girls  www.4AnimalCare.org/birds




---------- FOLLOW-UP ----------

QUESTION: Hi.. Gabi laid an egg today.
I am going to shave a calcium block into her food and keep her in my bedroom where it is quiet.
How long until I can take the egg away?

I know it is infertile -- both my birds are hens.

Thanks
Kayla

Answer
That sure does explain the territorial behavior doesn't it?  OK, leave the egg with her until she stops attending to it, or until you notice a crack or break or clear signs of it rotting


Check here under 'egg laying' for important info on how to deal with this
     www.4AnimalCare.org/birds