Wildlife Spotting

Not a warbler. Definitely a species of Tyrant Flycatcher: http://en.wikipedia.org/wiki/List_of_birds_of_Costa_Rica#Tyrannidae

by the way, I relied heavily on the book "A Guide to the Birds of Costa Rica" by F. Gary Stiles and Alexander F. Skutch

Warblers are especially difficult to identify in Costa Rica. Some are just passing through on their way to Panama and South America. Others take officially migrate here to winter. No matter what, upon arrival in Costa Rica, they have non-breeding plumage. This plumage makes entire groups of warblers look quite similar. I have narrowed it down. I think this is an immature bird in transit. Before you go ahead and edit with the species I put above why don't you wait for some more commentaries just to be sure. One of the best identifiers for birds on the site is Liam. copy and paste the url for this sighting on one of his sightings so he will be sure to check it out. Thanks. Great shots and great spotting.

They obviously like your house Robert! Looks like some kind of warbler.