Do you know what kind of flea medication was used on them? I would contact your vet tomorrow to see if you can get them in to be examined for their 8 week puppy shots etc and see what type of flea medicine your vet recommends. As for tonight I would give them both a bath to try to remove any live fleas and remove flea dirt so it is less likely to leave fleas or eggs in your house.
Good Luck
Dr Dawn
Yes, he probably needs antibiotics, maybe even sutures to close the wound. Unfortunately, only your vet can provide the care your bird needs- the antibiotics aren’t available over the counter. If you have Rimadyl on hand, a med/large breed rooster can have 12 mg, I believe, for pain/inflammation until he can be seen. I hope he heals!