[Welcome to the forums Tino]
Yes...Brad...I have also read about chams eating other reptiles, small mammals, and birds in the wild. I know some people who even feed their chams pinkies as treats. I do not know how well adapted the digestive system of chameleons is to this type of prey item. In the case of my female veiled Mango, I was very shocked that she was able to quickly swallow the hummingbird which was probably not much shorter in length than Mango's body (Snout to Vent she is probably between 6 to 7 inches) and was pretty wide in some dimensions. I really don't know where the bird went lol, but it suggests to me that are somewhat adapted to swallow relatively large prey items like other reptilian predators. If she were gravid, I could not see her being able to accomodate the bird though. As far as digestion goes...I am not sure yet. I do not think she has passed much of the bird yet but her activity levels seem to be normal (she has shown increased thirst though). I have not fed her much since but will continue to watch her closely. Although I give her way too much freedom when she is outside and really don't regulate what she eats thay may fly by...I do not think she has consumed any hummingbirds as they just don't ever come around here...don't think I will take her bird hunting anytime soon either
[Tino...remember that it is probably not a good idea to feed chameleons large prey items like birds...I do often feed Mango pretty large dragonflies...she loves them!]