Nik Software, now owned by Google, puts out a series of filter packages for Photoshop, Lightroom, Aperture, and others. I purchased the entire set because I wanted two of the packages (HDR Efx Pro 2and Color Efx Pro 2), and it wasn't that much more to get the rest in a bundle for Lightroom. So I have been playing around a bit with some of the other filter packages.
This is Silver Efx Pro, which allows you to make adjustments to transform color images into black and white. I know that the same could be done within lightroom if you're willing to play around with trying to get what you want, but it's nice to be able to quickly scan through several options and then choose one that you make adjustments too. It allows much more flexibility.
This photo was taken in Golden Gate Park, at the Botanical Gardens. The Egret didn't seem to mind having a lot of people around, and the small boy was fascinated.