so Ill ask again, does anyone know anything about Java Sparrows.

I have 6 of them and some of them bob up and down on their perches, wondered if this just happened to the males or females too, anyone?

Males sort of bob their heads in a courtship dance. But all of them do a little like exercise bob sometimes. Or the ones i know of do anyway. easiest way to sex is males sing, females chirrup. Also you will see that a males beak is alot redder and slightly bulbous at the top whereas a females is alot smoother. Hope that helps xx

__________________

Thanks fuzzymum guess Ill have to wait to see who sings and who doesnt