Which rosella is male, which female?

[hille000]

We have 4 rosellas. We'd like some professional help to be sure which one is female and which is male?
We know that its very hard to tell but maybe some professional eye can make a difference
Here is the link to a video we made of them
[ame=http://www.youtube.com/watch?v=kF8hhw7BpIc]YouTube - Rosellas[/ame]
We'd very much appreciate your help
They have been in here for two years and no signs tht they would like to breed

 

[falelos (GREECE)]

i have 2 eastern rosellas!!!!!I think that female is the one which has grap the cage theothr is male!!!!

 

[falelos (GREECE)]

In the other 2 both of them are males!!!

 

[hille000]

Thanks!
I have one more question. Do same sex parrots also feed each other?
Because our ones started to do that lately.