Florida Green Water Snakes

In February, with temperatures still in the mid-40s, Florida green water snakes were basking and breeding. My target on that seasonably warm mid-February morning was Florida round-tailed muskrats. In the 3 hours I spent scanning the marsh, discounting the underwater activities of the little rodents, the total number of muskrats seen was a resounding zero. But the day was far from wasted, for atop the many muskrat lodges a major courtship and mating game was being played out—by Florida green water snakes, Nerodia floridana. The morning air temperature, a sunny and rapidly warming 45F (water temps, although not measured, were undoubtedly many degrees warmer), were adequate for the snakes to seek the dry basking areas. It seemed a near invariable that the females emerged from the water first but each was soon followed by one or more males. Now, about a month later, the females, now gravid and noticeably heavier in girth, continue their daily basking but the males are more actively foraging. If the gestating females successfully avoid/evade the bitterns, egrets, and great blue herons, there should be a banner crop of neonates late this spring. I’ll keep you posted.

The tans and red phases of the FL green water snake seem largely restricted to the southern tip of the state.

The summits of round-tailed muskrat lodges are preferred basking spots for FL green water snakes.