This was a river we just chanced upon while traveling between Lagos de Montebello to Las Guacamayos reserve in eastern Chiapas. After a morning watching ridiculous male Resplendent Quetzals flaunting their considerable tails at us, a Highland Guan displaying over the top of us, and racking up a sweet triplet of jays, (Azure-hooded, Black-throated and Unicolored) at Montebello, we headed to the "Scarlet Macaw" place, Los Guacamayos. Once we got there, (stopping for the odd White Hawk and Fork-tailed Flycatcher along the way), we swigged down a few chilled dark Bohemia beers while these giant red macaws sailed over the river, that we could handily see from the bar terrace. Great day.

This is the Río Ixcán viewed from Mexico's Federal Highway 307 on the S edge of the Montes Azules Biosphere Reserve. As the river bridge where I took the photo from is slap bang on the border, most of what you see here is on the Guatemalan side.