|Baltimore Oriole- Wikimedia|
My Bull Creek neighbor, Judge John Waters, reports that Baltimore Orioles have arrived at his deck. He brings them in with a plate of orange slices and grape jelly while an expensive Oriole feeder nearby is ignored.
|Male Oropendola- Wikimedia|
"A male Oropendola stands on a thin horizontal branch, with his claws wrapped most of the way around it. Then the bird spreads his wings and swings around the branch so that he’s hanging upside down, his yellow tail feathers prominently displayed above him. Sometimes he reverses the motion and springs back to the top, and sometimes he flips all the way around the branch like a gymnast on the horizontal bar. At the same time, the bird lets out its loud, goofy call [ click here to listen]."These displays really pay off. Oropendola are colonial nesters, with an average of 30 nests in a colony, but up to 172 have been recorded. A dominate (and presumably very tired) male breads with almost all of the females. (See video)
Just as impressive was the nest construction itself. Our guide demonstrated its strength by filling an empty nest from last year brim full with rocks which it supported easily. These nests are nearly impossible to clean from both fecal debris, lice, etc. This is the likely reason they don't reuse old nests in spite of their sturdy construction.
More on Baltimore Orioles here and there are instructions on how you would go about building an Oriole nest at learner.org. (It sounds like way too much work.)