Check out this app from the Cornell Ornithology Lab, input your location, time you saw the bird, size and color and it will generate a list of likely birds.
Choosing the bird you saw will update their info and help the app become more accurate. You can also view the bird's territory and listen to samples of their calls. So far it's limited to 400 north american birds, but they're working on it, hopefully someday it will include birds from all over the world and of course... cute budgies!
By the way, I just used this app to call over a bunch of different birds today. I used their sound samples and played it within earshot of the birds I wanted to attract.
Got some nice curious cardinals, mourning doves and a bunch of sparrows lol
Sparrows are the cheekiest!
I found some holes in my window mesh and wondered where they were from. Later heard some tapping on my window and opened the blinds to find 5 of these guys hanging off the mesh and chewing holes!