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Cranioleuca erythrops
found in Mindo rainforest. is a species of bird in the Furnariidae family. It is found in Colombia, Costa Rica, Ecuador, and Panama. Its natural habitat is subtropical or tropical moist montane forests. The Red-faced Spinetail Cranioleuca erythrops places bits of grass and other material loosely streaming both above and below the nest chamber to break the shape of the nest and to cause it to resemble random debris without any underlying structure. This considered as a case of protection of its nest from predators by camouflage or 'masquerade".
The tail is suggestive of Spinetail, Red-faced seems to be the best match (for instance: http://www.ownbyphotography.com/traveldi...).
You may want to get it confirmed here, though: http://www.birdforum.net/forumdisplay.ph...