Cyathus olla

''Cyathus olla'' is a species of saprobic fungus in the genus ''Cyathus'', family Nidulariaceae. The fruiting bodies resemble tiny bird's nests filled with "eggs": spore-containing structures called peridioles.

Bird's nests
Bird's nest fungi - Cyathus olla
Cyanthus olla
Cyathus olla in the Jerusalem Botanical Garden
Many many Bird's nest fungi
Cyathus olla - they are actually quite small
Field Bird's Nest fungi (Cyathus olla)
Cyathus olla