Bird's egg

Bird's egg

Observation - Bird's egg - UK and Ireland. Description: When clearing out a nest box i found this egg as part of an abandoned nest. Four eggs in total. I wonder if they are wren or blue tit eggs. A five year old is holding the egg so it is quite small

When clearing out a nest box i found this egg as part of an abandoned nest. Four eggs in total. I wonder if they are wren or blue tit eggs. A five year old is holding the egg so it is quite small