Bird Nest + Wasp Nest?

This is a unique and informative spotting! Learn something (many things!) new everyday on Project Noah. Thanks for sharing it with the community (and bayucca for your response!). You've currently put this under "other" but that actually means "other organisms" without their own specific group on PN's website. Examples would be worms, starfish, clams, snails, lichens, etc. So "other" is not the same as unique or different, and is not really appropriate for your spotting. Since the group(s) featured has (have) their own PN group(s), please choose one (arthropods or birds if appropriate) to represent the spotting. Details on the species (or both if there are two) can (and should) be provided on the spotting form, in the various information fields. Thanks!

Please consider putting this unique spotting in the Animal Architecture mission at http://www.projectnoah.org/missions/8082378

You did a very interesting spotting! It is indeed known, that many birds are nesting in the direct neighborhood of wasps or bees. The wasps which are usually from a more aggressive kind are protecting the nests and nestlings of these birds from predators. But personally I don't think it is an Oropendola nest. In my eyes this looks more like pendule and usually you find several nests on the same tree and usually not in society of wasps.