"Grue" has a surprising variety of meanings:

Obsolete/dialiectical English: to shudder with fear, or a shudder (related to "gruesome")

Computer games: in Zork, a monster that eats adventurers in the dark [0]

Linguistics: an English translation for words that cover the entire green-blue part of the spectrum (in languages that don't distinguish blue from green) [1]

Philosophy: a color name that is equivalent to green until a specific future time, at which point it becomes equivalent to blue (used to raise questions about how to validly extrapolate into the future) [2]

[0]: https://zork.fandom.com/wiki/Grue

[1]: https://en.wikipedia.org/wiki/Blue–green_distinction_in_lang...

[2]: https://en.wikipedia.org/wiki/New_riddle_of_induction#Grue_a...

It looks a ton like the California Scrub Jay: https://www.allaboutbirds.org/guide/assets/photo/302371821-1... (https://www.allaboutbirds.org/guide/California_Scrub-Jay/pho...)

It is a grue jay only if it will devour you in the dark.

It seems we have failed to properly educate our children.

It is ignorance like this this makes me believe that civilization is doomed.

But we only have ourselves to blame

I wish black cap and Carolina chickadees would do this to further increase the confusion around them.

> the range of blue jays, a temperate bird living all across the Eastern U.S., only extended about as far west as Houston. They

I get why the green jay’s habitat would have expanded northward (from more tropical areas) in a warming climate, but I don’t get why the blue jay’s habitat would have expanded west of Houston.

Like many places, central Texas is warmer than it used to be, and maybe drier, but I wouldn’t think you could call it more “temperate” now.

A gray jay sounds about right.

I get that the changing weather might change their habitual latitudes but there was and is always some "boundary" between the two, no? So there was always a boundary but it moves north or south depending on warming or cooling climates (these birds have been around for millions of years). How did they only mate now?

Bleen Jay. It's more blue than green, and and also forms a mildly amusing pun, which is good for marketing.

>“We think it’s the first observed vertebrate that’s hybridized as a result of two species both expanding their ranges due, at least in part, to climate change,” said Brian Stokes

When all you have is a hammer…

I think it should be called a Blue Gray.

green jay looks more like a hybrid than the actual hybrid the post is about...

TIL uta has a brilliant website. And apparently no tuition, well done them.

Ah yes, the elusive grue jay. As blue jays are corvids—relatives of crows and ravens, the grue jay, known for its habitat in colossal caves, is a relative of the similarly chthonic Deep Crow: https://www.penny-arcade.com/comic/2008/03/21/the-crevice

why don't simply name "bluegreen jay" clearly from the colors we observe? As one of the users in comments said, it's ignorance (improper education reference) and we are only doing "mocking" if coming with such nicknames.

Dull Jay.

Trying to be both blue and green so perhaps.. a mockingjay..

It will be interesting to learn if the hybrids are fertile or not

I'm disappointed this wasn't a Nelson Goodman reference.

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