Unexpected link between cicada and bird populations...

...and it's exactly opposite of what you'd think. I've seen birds feasting on cicadas during an outbreak here and assumed birds were thriving on cicada outbreaks - so many to eat they fill up before they can eat them all - but it turns out something else may be going on. During Cicada Boom, Birds Mysteriously Vanish one of the more interesting ideas I've read in a short while