A male Montezuma Oropendola holds forth in a tree bedecked with twenty or more hanging nests. The nests are intricately woven sacks hanging three feet or more from the branches. Oropendolas favor trees that are separate from other trees and often build near large nests of wasps, whose stinging attacks deter both potential nest predators and parasitic insects.

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Montezuma Oropendola's High-Security Nesting