by Pajarita » Sat Feb 15, 2014 11:51 am
I can't really see the beak in the picture you posted and I can't open it either, so this is going to be a comment made blindly and without any real reference except for what you wrote. Baby birds have soft spots in both commisures (where the bottom beak joins the top beak - not on the actual beak itself), all baby birds do (some even have like fat lips there that go into the side of the head and allow the baby to open his beak REAL wide), but they disappear as they get older and this happens when they are still babies so, if yours is already weaned, these spots should not be there.
Now, discoloration in a beak could mean trauma but, normally, it happens on the mandible (top beak) because that's the first place another bird would bite or that they would crash into a wall, the floor or whatever and they are never soft to the touch. It can also mean a fungal infection but, usually, it happens around the edges because something (like soft food) gets between the layers and the moisture acts as a perfect medium for fungus growth - and, although the lesion gets all peely, it's not soft to the touch. Softness means lack of calcium and vitamin D3 but, as far as I know (I've never had a bird with this problem), it's supposed to happen to the entire beak ('rubber beak') and not just spots on either side. There are also beak tumors (like cancer) and infectious diseases that affect the beak, like PBFD (Psittacine Beak and Feather Disease) and Avian Pox.
Personally, I would take that bird to an avian vet.