What's eating my primroses?

[buildersmate]

Primroses seem to have been very good this year. But something is nipping the yellow flowers off the stalks and leaving them on the ground - piles of them, all around the garden. Nothing apparently gets eaten. What does this? Not caught any animal in the act yet, but possible culprit is Wood Pigeons. Anyone know?

[Hawkwalk]

It will be birds doing this. I have seen it many times in large town plantings where all the flowers have been removed.

[Jules001]

Yes I agree with Hawkwalk, it will be sparrows doing the damage, but why I have no idea