I was going to suggest a masked lovebird but they're the opposite of your description---black head/silvery blue body... kinda like this (*crosses fingers that the image works) :
![]()
there's this guy--but he looks to be bigger and more blue/green than blue/brown/silver:
(blue crowned conure)
Here's a pretty neat "First timers" site to bird care:
http://www.petstation.com/drbob-hand...bird-care.html
Bookmarks