I think that it is their small size that makes you want to take them home and have them live in an inflatable pool in the back yard. That would not be good for the bird though so you just have to suppress those kinds of ideas and remember that it is much better to have a picture of them wild and free at Crex Meadows.
Besides Michelle already gives me dirty looks when I talk about getting a third cat.
I think that the best pied-billed grebe pictures are when you catch them in the lily pads. It adds a little more character to the background of the picture then just plain blue water. If your lucky you might get a turtle to join in the shot, as in the first pic. Just be careful because pied-bills are usually kind of nervous so any small noise will cause them to sink under the water and disappear.