I find myself looking more and more at ducks trying to figure out the pattern if any, that helps in long distance identification. Other than the size ( i.e greenwing teal vrs a Mallard ) and the obvious paterrns it's kinda hard to really get a good idea of what kinda of duck is approaching or crossing when they are 75yrds or farther on a backlit sky. Seeing 3 or 4 ducks flying across the sky at the early AM they all look the same, at least to me. If they are sitting on the ground or swimming in water, then it is much easier. > Do most ducks fly in certain flock patterns in certain quanities? Kinda like most Canadian Geese? (i.e I always spot at the Canadians with either 11 or 12 in a V formation ) > Is their a major differences in a flock of "insert duck type here" vrs another duck? In my area we have numerous migratory and native or non-migratory ducks but when they are flying it's hard to figure out who's who. And until they are right up on you it's hard to get a good clear picture of their underside or rump coloring. Just to give you an example, we have just for the common puddle ducks located within 100miles of home ; Florida Mallard (aka molted duck) which is protected Greenwing teal Bluewing teal Woods Black Ducks and I'm pretty sure others that I have no clue of. Too me when they are flying they all look the same, except the teals are much faster and smaller than the others. any suggestions?