Rhode Island Red Hen with lump on head

[gabriellebw]

I have a 4 month old rhode island red. She is the picture of health. She runs around, eats and seems very happy. I noticed a lump on her head though which has me worried. A few weeks ago I noticed that she had some feathers sticking up in a strange way but thought nothing of it. Today I felt her head and realized that there is a lump there. It is about the size of a knuckle. It moves around a bit when I inspect it. It is hard to the touch and seems to be uncomfortable to her. She reacts when it is touched. I am a first time chicken owner and could use advice. Any ideas about what this could be, if it is harmful and how to treat it?

 

[mychooks]

Is it right beside the eye? it could possibly br eye wrm, where a tiny worm gets under the 'third eyelid'. . Is the eye watery?

 

[gabriellebw]

It is on the back and to the side where her head meets her neck. Her eyes look fine...