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.
Why does my throat and belly hurt
Bright blue upper partsOrange-red throat, breast and sides.White belly and under tail.If this is what you see then you have seen an Eastern Bluebird Sialia sialis
I think your talking about a yellow-bellied sapsucker.
The black bellied plover is a bird that has a black stripe down its throat joining a black belly that is bordered by white brown speckled all over and is about as big as a lapwing. It is typically found in Massachusetts and British Columbia.
I think you are referring to a White-Throated Kingfisher bird. If I'm not right, then sorry.
Banana
When identifying a female tetra fish, look for a rounder body shape, a larger belly, and a more subdued coloration compared to males. Females may also have a smaller and less colorful dorsal fin.
A fire belly toad in an amphibian who has a stomach that looks like fire. Its bright red/orange/yellow can warn its predators that it is very poisonous!
The occassional bird decides to try and eat one, but most know not to eat the bright coloured frogs. a fire belly snake
Yes, this is the largest thing a blue whale can swallow. It's throat is almost exactly the same diameter as its belly button, which is about the size of a salad plate
Blue Belly Coloration ranges from light gray to black with dark blotches on the back that continue down the tail. Mature male Western Fence Lizards have bright blue, sometimes greenish, bellies, and the undersides of their legs are often yellow. Females lack this decorative coloring. The scales are keeled and somewhat spiny.
Knock knock. Who's there? Belly. Belly who? Belly dancer.