I think they all need some surgery. The top one is turning red, which means there is infection going on.
Put together yourself a little tool kit of scapels, dental pics, tweezers, cuticle cutters, etc. Sterilize everything by boiling them for 5 mins, and soaking them in alcohol afterwards. You will need either vet wrap, human grade wrap you can get in all pharmacys or lot of gauze rolls. Preferable some sort of water/poop proof wrap. You will also need epsom salts, maybe some iodine like Betadine, (you can get that also at most pharmacys), rubbing alcohol, empty syringes, neopsorin and prep h for the swelling. Oh, and a big towel.
Soak the birds feet in the warm epsom salt water before hand so they are clean and soft. Wrap the bird up in the towel tighly and lay in your lap. Using your tools, gently remove the scab. You will need to dig out any pus chunks and pus core, if there is one. Sometimes all you get is liquid pus. The gunk in the feet is stringy and gooey and not easy to get out. Keep squeezing, picking and pulling out as much as you can. Go slow so you dont' get too much blood. Run the foot under the water in the sink to help stop the bleeding if it gets bad. Usually they don't bleed really badly when there is infection. You can also squeeze the back of the leg near the joint to pinch off the leg artery.
After you have worked on it as long as you can take it and have gotten all that you can out, irrigate the wound with the iodine or some salt water. You can do this all thru the surgery to keep things clear so you can see what you are doing. When you are done, pack the wound with neosporin and prep h by sticking the tip right down into the foot. Put a piece of gauze over the wound and wrap the foot up. Do not let the foot get wet or dirty. Vet wrap is pretty water proof and I find that the birds can be outside on a damp dirt day with bandages and still stay dry.
Don't wrap too tightly, but tight enough to keep dirt out of the wounds. Feel the toes about 5 mins after wrapping to see that they are warm and not cold. If they are cold, you wrapped too tightly.
Check the feet everyday. If by tomorrow the scab looks blood red in color, then leave the scab alone, apply ointments, and rewrap. If the scab looks pusy, then you will need to go back in. Keep the feet wrapped until the scabs fall off, which can take quite a long time.
