It depends on the species, as some are sexually dimorphic (visual difference between male and female). Also, if the bird carries a sex-linked mutation, it can be visually sexed. For example in Peach-faced Lovebirds, a female ino and a male pallid will create pallid females and pallid ino males. These are sex-linked mutations. The Lovebird species which are sexually dimorphic are the Madagascar, Abyssinian, and Red-headed Lovebird. Non sexually dimorphic species are the Peach-faced, Masked, Fischer's, Lilian's, and Black-cheeked Lovebirds. Current sex-linked mutations in Peach-faced Lovebirds are Cinnamon, Ino, Pallid, and Opaline. In households with single Lovebirds that are not sexually dimorphic, the only way to know without DNA testing or probing, is whether or not any eggs are laid. Though that is not a guarantee as many females do not lay eggs if there is improper care. Females do tend to be more aggressive, males tend to be more vocal as well, though that isn't always the case. The pelvic bone in females who have laid eggs previously will be split, whereas a males will be fused. Young females do not always have a space, though their pelvic bone is more rounded. Without a comparison it is not reliable. The best way to be sure is through DNA testing, though if you don't plan to breed, it shouldn't really matter.
Well, you can't. People will tell you to do a DNA test but seriously dont waste your money on that. Female lovebirds are fat, lazy, bigger and there is gap between there legs while the Male lovebirds are small, slim, very fast, active and they are always alert and there is no gap between there legs. Female lovebirds bite a lot when compared to a male lovebird.
Lovies have to be DNA sexed...they are not visually dimorphic (you can't tell sex by just looking at them). Visit Zoogen or Avian Biotech Labs on the internet for information on DNA sexing.
It's nice to have a couple of each.
how do i tell if my my turtle is a girl or a boy?...
you cannot tell if the caterpillar is boy or girl
I think its probably because the are mating........ Or it might be that they are both boys.
can you tell if a fish is a boy or girl by the tail
its harder for a boy to tell if a girl likes him
YOu can not tell the difference between a girl or boy starfish.
by asking its mother if it is a girl or a boy and plus you can tell by the face
you can tell if its a girl or a boy byits butt or eyes. if its a girl, it will have small pupils. if itsa boy, it will have large pupils.
i don't know if it is a boy or a girl
It can be either way, a girl can tell a boy that she loves him or a boy can tell a girl that he loves her.
You can tell by the tail if the tail is short than its a girl if the tail is long its a boy!