Ok so I checked my ducks feet yesterday because I noticed a dark spot and found what was pictured below. I probably sound dumb for asking because the answer is probably simple but she doesn't limp, it's not inflamed when I touch it, and she acts just fine. Today I removed as much of the dark tissue as possible after soaking her foot in Espom salt for 15 mins. I then used colorless iodine and Poultry Care Vetericyn. She's wrapped up and still acting as if nothing is wrong. Could this be a callus or something else? As I scraped I just saw what looked like normal skin underneath it for a short while before the foot started bleeding. Please post your opinions! I plan to keep cleaning and treating it until I take her to the vet!