* Many birds lay brown eggs. This is a common color, but it varies in shade and intensity.
* "Tiny" is subjective. What's tiny to one person might be average for another.
* Bird size isn't always a good indicator. Some small birds lay large eggs, and some big birds lay small ones.
To help you narrow it down, please tell me:
* Where did you see the eggs? (Location, habitat, etc.)
* What size are the eggs? (Can you compare them to anything familiar, like a dime or a marble?)
* Did you see the bird that laid them? (What did it look like?)
Once I have more information, I can give you a better idea of which birds might have laid the eggs.