The small green bird with a yellow belly is called a Greenfinch.
The small black bird with a yellow belly is called a Yellow-bellied Flycatcher.
The small bird with a yellow belly and black head is called a Yellow-bellied Flycatcher.
In the Belly of the Green Bird was created in 2006.
The bird species known for having a yellow belly and a black head is the Yellow-headed Blackbird.
Yaffle (a European green woodpecker)YakYakamaYakeilYakka SkinkYaminonYapok (water opossum)Yard antYearling (a young animal)Yellow bellied marmotYellow belly lizardYellow belly sapsuckerYellow belly sea snakeYellow-finned tunaYellow labYellow mongooseYellow rat snakeYellow-tailed cockatooYellowhammer (bird)Yellowjacket (bee)Yellowlegs (bird)Yellow-Shafted Flicker(Common Large woodpecker)Yellow Tail FishYellowthroat (songbird)Yeti (cryptid; a mysterious Himalayan animal)Ynambu (South American bird)Yoke green woodpeckerYoldring (bird)YoweYorkieYorkshire pigYorkshire terrierYosemite toadYucker (an American bird)Yun Boa
The small bird with a yellow chest is called a goldfinch.
The cast of Yellow Belly End - 2009 includes: Simon Munnery as Bird
it means that a small yellow bird is on your window screen
it depends on the rarity and which looks more exotic, but most likely the yellow one.
Yaffle (a European green woodpecker)YakYapok (water opossum)Yard antYearling (a young animal)Yellow bellied marmotYellow belly lizardYellow belly sapsuckerYellow belly sea snakeYellow-finned tunaYellow labYellow-tailed cockatooYellowhammer (bird)Yellowjacket (bee)Yellowlegs (bird)Yellowthroat (songbird)Yeti (cryptid; a mysterious Himalayan animal)Ynambu (South American bird)Yoldring (bird)YorkieYorkshire terrierYosemite toadYucker (an American bird)Yellow rat snake,yellow mongoose.yakama Yak,Yorkshire pig(white),Yokel(green Woodpecker),Yellow-Shafted Flicker(Common Large woodpecker),Yellow Tail Fish,Yellow Throat Garblersyakka SkinkYakeilYaminonYun Boayapockyeanlingyowe
The color scheme sounds like a male Painted Bunting, except they have a yellow-green back rather than throat, and a blue head. It would help to know where it was seen...at least what continent.
I think your talking about a yellow-bellied sapsucker.