Inevitably, that sort of failure rate can result in an almost pathological obsession to find them. I would not be denied. But it was probably 15 years before I stumbled onto this lovely group of bats under a low-hanging heliconia leaf. Instantly I discovered where I had gone wrong all these years. First of all, these bats are SMALL. A full-grown Tent Bat is smaller than my wife's fist - e.g. just four inches long. This entire cluster of bats (12? I'm not sure) could fit in both hands. I had, for all those years, been looking for something much bigger.
I had also, it turns out, been looking too high. This leaf, believe it or not, is hanging just over a foot above the ground, barely high enough (you would think) for the bats to safely fly in and out. To get this picture, therefore, I had to lie flat on my back looking straight up, using an ultra-wide-angle lens. It was all a VERY tight squeeze.
So... Am I satisfied? Has my obsession abated? I'm happy with the picture...and yet... This, then, is the true nature of obsession: I'd still like to find a roost with 20-25 bats... At least next time I will know where to look!
Nikon D3 with 14-24mm lens