chicken bump on waddle

[ccabal]

One of my hens has developed this big yellowish looking bump on her waddle. It almost looks like a real big zit, and part of me want to try and pop it. Anyone seen this before? Is it something to be concerned about?

 

[BantamLover21]

It could be some sort of injury, or possible the beginning sign of dry Fowl Pox ( a viral disease of poultry spread by flying insects). If you want, you can try popping it--I don't think it would hurt. The only other thing I can think of is that it is a blister/swelling caused by frostbite. How cold is it where you are?