I just bought another tiel to go with my male...at least was told it was a male...but they do not get along...if the new one gets to close he chases it off and bites...of course i bought 2 birds that can't be visually sexed...a Pied and a Lutino...the pied (believed male) whisles and sings...does the cage and floor pecking....the lutino just screatches....is it possible i have 2 birds of the same sex?...or do they just need more time to get to know each other