Thank you for all your answers.
Does anyone know what bird or waterfowl No 4 is
The clue being, sounds fishy?
I just cannot think what it is.
Thanks,
Tarasmum
Tarasmum, glad I could help. I was relieved that I found 'coly' in the 4-letter words - I'd have kept going, but there's an awful lot of 5-, 6-, 7-...letter birds!