There parakeets also known as budgies, you can`t really tell the gender of yellow and white budgies, some you can, if the cere (nose) is blue then a male, light blue with white on top is a female. :D

i have 10 yellow parrots like these and i dont know whether they are male or female but there are other 3 male parrots (which i know for sure that they are male) which are green in color. so my question is should i buy more male parrots or these 3 are sufficient for those 10 parrots.

They look like parakeets and it is almost impossible to identify the sex of a bird .There are two ways of finding out what sex your bird is .One way cost money there are web sites you can find that you send a feather to from the bird you want sexed and I think it cost around $20 that is one way the other way takes time. If you have a female eventually she will start laying eggs all female bird after coming into maturity drop their eggs. There doesn't have to be a male around for this to happen either.

These are lutino budgies,There cere does not go blue in males,it is a pinkish pale blue and the female,s cere is almost the same,but the female,s changes to brown when they come into breeding condition.

They look like budgies, if they are, they are both females because their beak is plain, males have blue beaks

in the above picture which one is male.......how to know if the parrots are male or female and tell me the exact name of these parrots..