It is permissible to eat peacock meat because it does not come under the prohibited things which the Prophet forbade eating such as animals that have fangs and birds that have talons.

The vermin of the earth such as snakes, scorpions, dung beetles, cockroaches, rats etc., are haram. This is the view of Abu Hanifah, Ahmad and Dawud (may Allah have mercy on them).

It was not narrated that the Prophet (peace and blessings of Allah be upon him) forbade drinking milk at the same time as eating fish.