Why is this pigeon so black? is it oiled with motor oil? Why does it have black legs? (1 Viewer)

[LondonNight]

I originally wanted to post this in the "Bird identification" section, but I read the rules there, and the rules say "NO posting captive birds", so I dont know where else to post this...
Never seen a pigeon with black legs before.
The question is in the title. Also, are black legs indicative of a disease? An user from another forum indicated so on a similar looking pigeon.
I am currently treating the baby pigeon for canker of the throat and eyes, with plans to release afterwards.
Was caught in an urban environment, in NorthWestern Romania.

 

[Trinovid]

Doesn't look at all like an oil covered bird to me; let's see what anyone else thinks on the subject.

 

[Georgebirds]

Young pigeons can have black legs naturally sometimes, and the black-marked feathers are just dark and patterned with natural pigmentation too, not dirty - this colour pattern is known as checkered or chequered, some are more heavily marked than others. Both are normal and healthy for this particular bird, no worry.

 

[LondonNight]

Update: Unfortunately, the bird has died today.