what sort of chicken

Possibly a White Crested Polish

Thanks ....saw a pheasant in a field .....then this ones head popped up on the horizon so I stalked it like an idiot because I thought it was some sort of grouse ....didnt realise what it was until I got close !.....never mind my wife and kids thought it was hilarious!

Haven't a clue!  Have to confess that poultry recognition isn't my strong point.  But at least you entertained the family in your efforts to get the picture!