These images were taken yesterday (13 Nov 2012) at Brazoria National Wildlife Refuge - on the Texas Gulf Coast. There are some freshwater ponds in the Refuge, but some of the water is brackish. I'm not sure about these ponds.
2. I don't know
3. I don't know
4. Are the ducks marked correctly? I also see Greenwing Teal, White Ibis, American Avocet, Northern Shoveler (maybe) and American Wigeon (maybe)
5. Chipping Sparrow?