how do you kown a male cockatiel from a girl cocktiel?

Answer 1

It depends on the morph of the bird, since you didn't specify, heres some info about sexing about each:

Normal Grey ~ Females have mainly grey faces with only traces of yellow around the beak, eyes, and forehead. Their cheek patches appear duller since there is a wash of grey over the orange and their crests are grey. They have yellow spots on the underside of their flight feathers and conspicuous yellow and grey barring on their tails. After their first molt at 6 to 8 months males lack the tail barring and the flight feather spots but have a bright yellow face and 'bib'. Their crests are mainly yellow with grey only at the tip. The cheek patches are a bright orange since there is no grey there to dull them. The white wing patch is immaterial when sexing.

Other morphs ~ Normal Whiteface, Cinnamon, Fallow, Silver, Yellowcheek, Pastelface, and any other mutation which results in a basically grey or brown bird with white or yellow accents can be sexed in the same way as the greys. That is females will have grey or brown faces, spots under their flight feathers, and barring on their tails and generally have lighter cheek patches. Males will lack the spots and bars but have white or yellow faces and crests.

Lutino ~ Lutinos can be visually sexed since the females will have the same bright yellow spots under the flight feathers and their tails will show a yellow on cream or cream on yellow barring pattern. Males are sexed by the absence of these traits. One note -- a very pale lutino may not show the patterns clearly, try holding a shed tail feather up to a strong light. It has been said that Lutino-pearls are difficult to sex. These same people claim some males retain their pearls for several molts and, depending on the extent of the pearling the underwing spots and tail bars may or may not have been present to begin with in either male or female. If you have a baby lutino-pearl with spots and/or bars who loses them in the juvenile molt you know that you've got a male. If you've got an adult without these markings you can be fairly certain it is a male.

Pearls ~ Some sources confidently state that male pearls always lose their pearl markings during their juvenile molt but I've recently read that some breeders have developed male pearl birds who do not lose their markings at adulthood or who lose them slowly over a period of years. In any case, after their first molt males will have yellow or white faces and females will have grey or brown ones. The yellow face is probably your best guide at this point.

Lutino Whiteface ~ Some sources confidently state that male pearls always lose their pearl markings during their juvenile molt but I've recently read that some breeders have developed male pearl birds who do not lose their markings at adulthood or who lose them slowly over a period of years. In any case, after their first molt males will have yellow or white faces and females will have grey or brown ones. The yellow face is probably your best guide at this point.

Some more info:
~If a bird lays an egg its a female.
~Some mutations are sex-linked and you can often tell the sex of these by knowing the colors of the parents. Lutinos, Cinnamons, and Pearls are common sex linked mutations. Basically, if the father carries the sex-linked color either visually or as a split and the mother does not visually show that color, (females can't be split to a sex link mutation -- yes, this is backwards from humans and other mammals) any babies with that coloring are female. When the male parent is split not all of the female babies will be the mutation color but all babies of the mutation color will be female.
~In general males whistle and females are quieter but there are exceptions.

Answer 2

That depends on what mutation (colour) it is. Depending on the mutation, there are different ways to tell.
So things like bright orange cheek patches, stuff like that, doesn't apply with many colours. Some are impossible to tell without a DNA test.

For normal grey cockatiels, the males have a bright yellow face. The females have a dull yellow-grey face and barring underneath their tails (males just have plain grey tails).
Pic: http://www.dkimages.com/discover/previews/746/118972.JPG

Answer 3

That would depend on the type of cockatiel, below is a link. I usually find the tail barring quite easy to tell what sex except for whiteface and sometimes hard with lutino.



http://www.cockatiels.org/articles/genetics/vsexing.html

Answer 4

If you have a gray or cinnamon, their head will turn yellow within the first year if it's a male. Also- males usually do most of the talking and whistling for attention. (although are capable of doing this as well... )

I called my cockatiel, Sweetpea, my beautiful girl for years. Even when his head turned yellow and he began to talk. It wasn't until we got him a girlfriend that I finally acknowledged he was a boy. :)

Answer 5

The male cheeks are fluro orange, females dull.

Answer 6

the only true way is a blood test from a vet

Answer 7

The vet will have to do blood work.

Answer 8

the girls wiggle when they walk,the boys spit and cuss