nest box saga continues

[watervole]

At least one blue tit is still definitely visiting the nest box regularly. I sighted him/her with a caterpillar this morning and several time later during the day.

I've seen the great tits as well going in and out.

Has anyone ever heard of two species sharing a nest box?

Blue tits and great tits sometimes flock together in the winter (they don't compete directly for the same food as they tend to feed at different heights and I guess more eyes are better for spotting predators)