After our birdwatching excursion on Monday we spent Tuesday relaxing at the resort. Once again I awoke hideously early and slipped out just after dawn to go birding around the resort. I heard the chatter of the parakeets coming from behind our building and headed off in that direction instead of the hummingbird spot. The usual White-winged Doves and Great-tailed Grackles were around, and I heard a couple of Rufous-naped Wrens near the mango trees. In the dead tree by the pool I found about ten Orange-chinned Parakeets perching out in the open.
Black Spiny-tailed Iguana
After coming back from our Palo Verde birding trip with Olivier Esquivel I rested for a while, then went up to the red-flowering trees to look for the hummingbirds and Squirrel Cuckoos later in the afternoon. I didn’t see the cuckoos, and while I saw a few hummingbirds darting in the canopy, none perched out in the open long enough to get a good look at them.
After breakfast Doran and I walked down to the beach. To get there we had to pass by the small group of mango trees, cross an open lawn, and descend a few Palm-shaded stairs before emerging onto the sand. There was a wide swath of sand exposed by the low tide, and a large crust of rocks protruding from the water that reminded me that the geological history of Central America is very different from that of eastern North America. The land bridge connecting North and South America – which includes Costa Rica and Panama – didn’t exist until about three million years ago. Costa Rica was formed when the movement of the western edge of the Caribbean plate forced the Cocos plate beneath what is now the Pacific Ocean to slide beneath it, creating a subduction zone which birthed a number of volcanoes. The relentless grinding of the Caribbean plate over the Cocos plate and the numerous volcanic eruptions over the millennia caused the land mass to grow, resulting in a today’s mountainous west coast with its steep cliffs overlooking rocky tidal lagoons.