The second stop on our Lower Rio Grande Valley trip was to the Sabal Palm Sanctuary, 527 acres of relict sabal palm habitat tucked away in a bend of the Rio Grande just south of Brownsville. We had visited in October of last year (and blogged about it here), and we looked forward to seeing it again so soon. There was the prospect of seeing a regal black-striped snake, perhaps in the fallen palm fronds and other material on the forest floor, or finding a Texas indigo snake cruising among the acacias and palm trees. The sanctuary is a subtropical wonderland like no other place in Texas (except perhaps the Nature Conservancy’s Southmost Preserve, located next door).
However, as we followed the trail into the old butterfly garden, it was hard to recognize the garden plots and little pond that formed a little pollinator oasis in previous years. The plots were still there, with withered pollinator plants shedding most of their leaves under the similarly dessicated trees that usually provide dappled shade. Bees landed on the duckweed-choked puddle that had been part of a man-made pool provided for the butterflies. The trail led away past triangle cactus whose green color stood out against the brown grass and dead leaves, making the cactus seem much more prominent than its usual role, tucked away among dozens of species of green plants.
The promise of water in the resaca pulled us forward; if there was any water in the little oxbow pond, we could focus on wildlife around that little oasis. The margins were still green, but the water was gone, and so was the wildlife except for a green anole lizard and one swallowtail butterfly.
Call it inadequate planning (we could have checked recent rainfall patterns better) or the luck of the draw in a place where rainfall is inconsistent and the climate arid. Outside the immediate area of the river delta is the thorn scrub of south Texas and northeastern Mexico, places that can alternate between desert aridity and pulses of tropical moisture. Clint has visited the Sabal Palms Sanctuary more often than I have, and he said he has never seen it this dry and seemingly lifeless. The one significant finding, one that burns my fingers in envy to type it, is this: While Clint, Zev, and I were making our way to the dry resaca, Amber observed a groove-billed ani on the trail. This is one of those tropical bird species that birders travel to see in south Texas, considering any day when they see a groove-billed ani a lucky day indeed. Meanwhile, the rest of us will try to be content with our sighting of a green anole!