Small shell

Small shell

Observation - Small shell - UK and Ireland. Description: This small shell was found in the nesting material of a great tit after they fledged. The shell is 5.4mm long. Presumably brought in with the nesting material?

This small shell was found in the nesting material of a great tit after they fledged. The shell is 5.4mm long. Presumably brought in with the nesting material?