This might have to be my favourite DA clue of all time, a clue so good it surpasses Gold and deserves to be considered Platinum.

4 down: Notable bird-watcher (as he put it) an intimate bedfellow (7)
I got to thinking of Peeping Tom watching Godiva-like birds and spent a lot of time thinking SNOOPER must be the answer. Somehow, and fittingly reminiscent of a spoonerism, I flipped some letters and stumbled on SPOONER and squealed with delight.

Genius.