Why were we there at dawn? Because Blue Cotingas don't really like direct sun any more than we do.
Here's the female Blue Dacnis.
Pigeons and parrots were flying about, moving from roosts to their feeding areas. We saw more Pale-bellied as well as a few Scaled Pigeons though they didn't come very close. These are Red-lored Parrots, the dominant Amazon in Panama
We saw a couple groups of Mealy Parrots distantly, in addition to a few Blue-hooded Parrots, a new species for most if not all of us.
I'd expected the Blue-hooded's to be a lot more common than they turned out to be, probably based on eBird bar graphs from people who could recognize the flight calls.
White-shouldered Tanagers are very common birds of the upper level of forest in Panama, we saw several small groups working the treetops.
A Moustached Antwren (picture a winter wren plumaged like a female Black-and-white Warbler foraging like a gnatcatcher on speed) flitted past, but a Slate-colored Grosbeak remained unseen in the distance.
We enjoyed look-down views of a Violaceous Trogon.
As the Sun started to really get hot, raptors started appearing. This is a Double-toothed Kite.
You can't help but appreciate these small tropical Buteos given they're so hard to find in the U.S.
All told, I think we spent about 2 hours atop the tower before giving way to the direct Sun and allure of more birds in the cooler understory...