Wakodahatchee wetlands in Delray Beach is a great location (just south of West Palm Beach). Virtually around the corner is Green Cay Nature Center. A few minutes south of those, still in Delray Beach, is Morikami Museum and Japanese Gardens. Several miles further south in Coconut Creek is Butterfly World. There are an untold number of things for your wife in West Palm Beach, Delray Beach, Boca Raton, and further on down to Fort Lauderdale and Miami.
I second these two locations. They come alive in January through March with baby birds everywhere. The boardwalks at both of these locations bring you close to the action. Keep in mind that there are many, many walkers so tripods have to be managed to keep them from being in the way. We live for six months minutes away from these locations, my wife walks and I shoot, then in the evening I take her, and myself to dinner at Delray Beach, a wonderful location that has an historic and wonderful hotel right downtown. Good luck.