He may be panting if it gets too hot in there, be sure to keep an eye on the temperature. Does your baby have feathers, and what specie is it?
I am not a vet, nor a breeder of these birds, but I do recommend seeing one as soon as possible, or speaking to a skilled breeder of aracaris.
However, what I have found on various specie profiles leads me to believe your aracari is old enough to not need to be placed in an incubator if its environment is warm and draft-free. This is based off of the readings I have done on the Collared and Curl Crested Aracaris. The time of infancy varies from specie to specie, however, and this may not be true for your baby. I really do recommend speaking to a breeder, or researching the reproductive cycle of your individual baby's specie. Best of luck!