We have had good numbers of Hoary-headed Grebes at a number of locations over the past few months.
Not that we don’t see them regularly, just the large numbers are quite unusual. Some ponds at the Treatment Plant have had 30-40 birds on occassions.

We were at the T-Section area, and in the pond near where we’d parked IamGrey, it was hard not to notice the 15-20 or so Hoary-headed Grebes all swimming about together. 

What turned out to be unusual was they all drifted down to the far end of the pond on a strong breeze, and then with a hop, skip and a jump, they launched themselves into the air and flew the 150m or so to the other end of the pond, drifted back and flew again.

It is most unusal to see any grebe airborne, so this was particularly intruiging. The books tend to say that “they fly at night”, but I suspect that is because no one sees them in daylight, and the conclusion is obvious, “I haven’t seen grebes flying in daylight, so…. They must fly at night” 

These ones, obviously hadn’t read that book. And they continued to repeat the performance
I’ve also been told, on reasonable authority, that Grebes tend to lose the ability to fly the longer they are in a permanent pond. Some Little Aussie battlers can have several seasons in the same pond, and if the theory is correct, then the wing muscles etc, must atrophy and they are for all intents, flightless.

And the Hoary-headed continued to drift up the pond and then fly back. Presumably they were using the rather strong wind blowing down the pond to help get lift. We began to wonder if they were perhaps getting some training in to re-develop the flight muscles

We stayed in the area for a couple of hours and to our surprise when we checked, just as we were leaving, there were only a couple of Grebes still in the pond. The rest had flown!

And of course we missed that.
Often see them sitting in the ponds and doing a wing-stretch and conclude that those wings aren’t all that big for such a small bird. But, stretched out in flight they obviously get enough lift. 
With those little stuck-on legs dangling out behind.
Enjoy