What kind of egg is small white round and looks like a chicken egg?

The most likely answer is a quail egg.

Here's why:

* Small: Quail eggs are significantly smaller than chicken eggs.

* White: Quail eggs can come in a variety of colors, but white is a common shade.

* Round: Quail eggs are more round than chicken eggs, which tend to be more oval.

* Looks like a chicken egg: The shape and texture of a quail egg are similar to a chicken egg, just smaller.

However, there are other possibilities depending on the context:

* Small chicken egg: Some chickens lay smaller eggs than others, so it could be a smaller chicken egg.

* Other bird species: Some other bird species also lay white, round eggs, but they might be a different shape or size.

If you have a picture, it would be easier to confirm what kind of egg it is.