Don't know about the rooster but the hammering neighbour could be dealt with by a Noise Abatement order from the District Court. Refusal to abide by it would be a contempt of court which is a criminal offence. And that means the police can be called. (See the discussion of the drumming teenager for appropriate links).
That said, this could be a mental health issue but even so, action should be taken that means the relevant agencies step in ASAP.
But the rooster has me foxed.