Sparrow with growth on cheek

Sparrow with growth on cheek

Observation - Sparrow with growth on cheek - UK and Ireland. Description: This female house sparrow has a substantial growth on its cheek. I'd been experimenting with manual focus earlier, and forgot I had autofocus turned off when I took these shots; that's my only excuse for their poor quality. I hope someone can give me an

This female house sparrow has a substantial growth on its cheek. I'd been experimenting with manual focus earlier, and forgot I had autofocus turned off when I took these shots; that's my only excuse for their poor quality.
I hope someone can give me an idea what's going on...