What is the Grail?

 

Credit: Birding Memes (Facebook)

In case you don´t get it, the meme shows a Bigfoot (a mythological creature) looking at an ivory-billed woodpecker, a real North American bird believed to be extinct. 

Many bird-watchers hope that the flamboyant avian is still out there somewhere. The ivory-bill has therefore been dubbed "the Grail bird" and is still included in US field guides just in case it´s still around! 

Scientists are apparently very skeptical of its continued existence, hence the funny meme above of a Bigfoot complaining that nobody will believe her if she reports a sighting...