In my earlier visit to Bharatpur’s Keoladeo National Park, I was so overwhelmed by the sheer number and variety of birds that I’d not registered how many other animals find a home in this wetland reserve. I don’t know much about turtles at all, and the variety here is a good place to start figuring out how to identify fresh-water turtles. The Indian Roofed Turtle (Pangshura tecta) is one of the easiest. I’ve seen them being sold as pets, but the individual you see in the photo was larger than the ones I’ve seen in shops.
I had to learn two technical words in order to start identifying turtles: the carapace is the hard shell on top, and the plastron is the hard underside of the shell. The plastron of the Indian Roofed Turtle is a yellow-orange in colour with the irregular black spots which you see in the photo. An additional identifier is that the neck has longitudinal yellow streaks, which you can see in spite of the fact that the neck is not fully extended. Since females grow to be larger in this species, this individual is likely to have been one.
A turtle’s life is slow and measured: slow maturity, taking 10-10 years, long and modestly fecund life, so that enough offspring are produced to fit into what were historically stable ecosystems. I’m not sure what the lifespan of this species is, but it is unlikely to be much longer or shorter than the usual lifespans of Indian turtles, which is about 60 years.
The first principle is that you must not fool yourself and you are the easiest person to fool. –Richard Feynman
Watching turtles is a little frustrating. Although there’s a large variety in India, there are few guidebooks or websites which tell you how to identify what you saw. We stopped to see a few of these large turtles on our first sortie into Kaziranga. I didn’t know what they were when I took the featured photo. I have a tentative identification of it being the Indian black turtle (Melanochelys trijuga) through its size and colour. The hind edge of the shell is deeply serrated, as you can see. I’m sure that this should be an aid in identification, but it does not seem to be mentioned in any guide. If it is indeed the Indian black turtle, then it is near-threatened. This means that it could still be fairly common inside a sanctuary, so there is a good chance that this is what I saw. But you can always fool yourself.
The common Indian roofed turtles (Pangshura tecta) are relatively small turtles which love to climb out of the water and bask in the sun. It took me some time to decide whether the photos above are of P. tecta or the endangered Assam roofed turtles (Pangshura sylhetensis). Both are found in forest streams. The reptile database is pretty useless as an identification tool because its photos are not curated by experts. Eventually it was Wikipedia which convinced me that I’d seen the rarer variety. The article on P. sylhetensis says that its shell is serrated at the hind edge, as these are. The upper shell of this species is also darker. It is so nice to be able to see an endangered species that you want to believe that you have. So I’ll have to wait a little longer for some experts to tell me whether or not I have. Given the rarity of P. sylhetensis, (the IUCN page claims that only a few specimens have ever been seen) the chances are that I’m fooling myself.