Redpolls - but what type?

Redpolls - but what type?

Observation - Redpolls - but what type?. Description: We're not sure but at least one of the birds was ringed with a single ring on the left leg. We have a couple moire photos if these would help with id

We're not sure but at least one of the birds was ringed with a single ring on the left leg. We have a couple moire photos if these would help with id