Hi, our ducks have just started laying and i picked up a different one this morning, its about the size of a hen egg and green and slightly pointed at one end. I was wondering if anyone could guess from the ducks i have which it could be so i can decide whether to incubate it or not? we just bought a few young ducks last year so havnt got to grips on who's is who's yet 
Could be from;
call duck
bali runner
saxony
white campbell
khaki campbell x
or rouen x (i think hers are big and white though)

Could be from;
call duck
bali runner
saxony
white campbell
khaki campbell x
or rouen x (i think hers are big and white though)