We're having a problem deciding whether 'our' great tit, the one that roosts in Box1 every night, has a partner. Here there is one GT outside looking into the box, ...
We're having a problem deciding whether 'our' great tit, the one that roosts in Box1 every night, has a partner. Here there is one GT outside looking into the box, ...
... and another inside the box, displaying vigorously. This does not look very welcoming does it. I presume it means "Keep Out".
And leave he does.