see if they have a dick
The males are usually more colorful, and sing more often.
there is no opposite. a zebra is a zebra.
to have sex
Mayor Finch supports same-sex marriage and is a member of Mayors for the Freedom to Marry.
The term "plucking a finch" is an outdated term referring to sex. Your passage really needs to be considered with the context to be sure but, plucking a finch to leave no feather could mean that the person has sex with a lot of people.
When ducks are adults, you can look for the easy to tell "sex" feather on a male. This is a feather at the top of the base of the tail that has a curl in it. It curls down towards the birds back. If the bird is a male it will have this sex feather.
Check this out; http://www.ehow.com/how_2246585_determine-sex-finch.html also ...hi this is Rachel and um i can tell certain female to male zebra finches ... 1.the colorful male ones will have colors around their neck it can even be a pattern i my self have a male and i had a female finch too but afortunately she died of stress also if you want to get a finch ..get a male b-cus they act silly and funny when they get used to you ha ha mine sings to me and they don't stress as much soooo...
25 chromosomes
Because sometimes birds and bees have sex with each other if they're HORNY
Some you can tell by color or plumage. A vet can do a physical exam and look at the plumbing. A DNA test is the most certain.
The zebra markings are sex-linked to the female Y chromosome. Since females are XY (opposite of mammals) if you cross a zebra female with normal white male, the female offspring will still be zebra.
The zebra will have offspring who cannot produce blood proteins.