Field Bird's Nest - Cyathus olla


The fruit bodies are said to resemble tiny bird's nests filled with eggs. The cup shaped 'nest' is 8 to 15 mm high, 6 to 10 mm wide and initially has a 'lid', whilst the 'eggs' or peridioles are quite large in this species at 3 to 3.5 mm across.

Identification difficulty

They occur on twigs, woodchip mulch and other woody debris, but another good place to look for these tiny fungal fruitbodies is on dead Marram-grass stems on coastal sand dunes.

When to see it

May to November.

Life History

The 'egg' capsules are splashed out of the cups by rain drops and they then attach to grass stems where they burst open and spread their spores. 

UK Status

Fairly frequent and widespread throughout Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map