CLOSED: pretty suire these are mallards, but the bluish area . . . .

on the wing makes me wonder. My books show the green head and white "necklace", so I'm pretty sure its a mallard, but I don't see the bluish area on the wing in my books, what gives?

Another pic showing the bluish area better.

I reckon this is a female mallard, the bluish area really stands out. Are the others juvies?

Hack

All Mallards ..3rd pic is a female, not sure if the others are juveniles

Hack, Mallard iridescent colors will vary somewhat depending on the sunlight. Here is a link explaining the blue coloration on the Mallard. Plus, domestic Mallards will have many color variations as a result of inter-breeding between feral and indigenous Mallards.

http://en.wikipedia.org/wiki/Speculum_feathers

Yep, Mallards. The blue patch on the wing is called the speculum.

Resin

Thanks linth and Resin. The web site was very nice and it also referred to the speculum as Resin pointed out.

Hack