Ailing Blue Tit

Ailing Blue Tit

Observation - Ailing Blue Tit. Description: I spotted this blue tit at one of my garden feeders. It was some distance away and the light was poor, so the image is not great by any means. But I decided to post it anyway in the hope someone might be able to help with some advice on what might be wron

I spotted this blue tit at one of my garden feeders. It was some distance away and the light was poor, so the image is not great by any means. But I decided to post it anyway in the hope someone might be able to help with some advice on what might be wrong with the poor chap. It's clearly an older bird past its peak and there were – as can clearly be seen – two large growth-like protuberances around its beak. Are they evidence of a tumour, an infection perhaps or are they the consequence of a limited gene pool? The bird otherwise was flying well and apparently eating healthily. I really would be grateful of any guidance, so thanks in advance.