Spotting and Tracking Mammals at Chan Chich

Unfortunately, we haven’t seen anything as exciting as a jaguar recently, but morning walks at the Lodge have been fruitful nonetheless. Mostly I look for birds, but any mammal spotted is one worth seeing – even a squirrel, given that the most common species here is one only found in Central America. I’m most used to the Eastern Gray Squirrel of the United States, as well as the smaller Variegated Squirrel of Costa Rica’s Central Valley and the cute Red-tailed Squirrel in the volcano regions. Here at Chan Chich, the Deppe’s Squirrel is a dark brown with frosted gray on the tail, and it is much more timid than the acclimatized suburban rodents of the East Coast in the US.

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New Mammal Spotted at Xandari

About a week ago, while walking the forest trails at Xandari, several resort employees and I had a great wildlife spotting. The trail we were taking leads to a seven-foot waterfall that flows into a large pool and continues as a small river with several other waterfalls in it, one of which is about a seventy-foot drop. As we were rounding a bend in the path, a member of the group looked across the river to the opposite bank and noticed an animal down by the water.

It had either been drinking or perhaps hunting for some aquatic prey, but when it heard our voices (we were a group of about six or seven) it scampered up the hill and in among the trees, where we lost sight of it. My first impression was that it was a black house cat, but it quickly became clear that it was in fact almost double the size and its tail was quite large – not bushy, but as if the bone and flesh themselves were a good deal thicker than a normal cat’s.

White-nosed Coatis foraging warily on the grounds of Bosque del Cabo, a nature lodge on the Osa Peninsula of Costa Rica.

The staff member who first spotted the animal voiced the hypothesis that it was a pizote, or White-nosed Coati, a member of the raccoon family that many visitors to Costa Rica have probably seen in their travels here. But as the black-furred animal briefly turned its head back to check that we were not pursuing it, I could see despite the shadows cast by the forest that its face was not pointed into a long nose but rather a normal cat’s face, and there was no hint of white there either. Continue reading

Ichnology, Xandari-Style

Ichnology is the study of animal traces—commonly tracks, but also anything else that organisms leave behind in their activities (for example, burrows, nests, scat, feeding remnants, or territory markers). It is often far easier to discover an animal’s presence through tracks than direct visual sighting, especially for shy or nocturnal mammals. “An animal can only be in one place at a time, its tracks can be everywhere,” one of my environmental science professors sometimes remarked in support of this principle. Indeed, around Emory’s campus (Atlanta, Georgia) I found tracks on stream banks that belonged to animals I had never actually clapped eyes on in the flesh. Prized among those were a  Continue reading