A large flock

With the level of water in the lake dwindling as the summer comes on (no place to swim) and with the trees still saplings (no place to roost), we don't expect to see much wild life at the lake.

Last evening (1-Mar-11), Prasanna and I, along with a young journalist were at the lake and we spotted quite a large flock of birds. They looked like common coots but could they be a duck species? Neither of us was sure. See the pics - this was as close as we could get them.