What is "tiddlers"

Usage examples of "tiddlers".

The number of these relative tiddlers in Earth-crossing orbits is almost certainly in the hundreds of thousands and possibly in the millions, and they are nearly impossible to track.

When she had just finished telling him about her own childhood forays into the countryside with a gang of other kids to catch tiddlers and pick fruit, how could he tell her that such simple pleasures might never be able to be enjoyed by their own children?