Sounds like a typical scam to me! If they tell you to mail the money to some place or some other country, it's a scam.
If you want you can check out:
http://www.parrotpro.com/birdhand.htm
http://www.ftc.gov/spam/
http://www.epinions.com/content_4360872068/show_~allcom
Some will say that they will send you an amount of money, and for you to deduct the amount that the birds cost them, then give the rest of the money to a 'shipping agent', and then for you to ship the birds off to them...