Just noticed tit in my garden with what looks like a tumour.
Is this a tumour or avain pox?
Thanks
Sorry pics not great.
Sorry nobody has replied..very quiet on here at this time of year. For me it too hard to say from your photos. All you can to is make sure you wash your feeders regularly with hot soapy water and allow to air dry...should you see any more birds show up with growths then probably best put the feeders away for a few weeks incase it is avian pox.
You can read more about disease in our garden birds in the link below and hopefully that will help you make a diagnosis
https://www.bto.org/our-science/projects/gbw/gardens-wildlife/garden-birds/disease/avian-pox
(Pardon the Scottish Accent)