1. Big Bang Theory Sheldon Casino Buffet
2. Big Bang Theory Slots
3. Big Bang Theory Sheldon Christmas Present
4. Big Bang Theory Sheldon Christmas

Sheldon Lee Cooper Ph.D., Sc.D., is a fictional character in the CBS television series The Big Bang Theory and its spinoff series Young Sheldon, portrayed by actors Jim Parsons in The Big Bang Theory and Iain Armitage in Young Sheldon (with Parsons as the latter series' narrator). THE Big Bang Theory fans were stunned as Sheldon Cooper actor Jim Parsons showed off his dramatic transformation in a new photoshoot. The actor, 47, debuted a new stylish look for the front cover o.

A common problem with television's portrayal of scientists is that they often seem to know everything science-related, including information well outside their area of expertise. However, The Big Bang Theory's Dr. Sheldon Cooper (Jim Parsons), a noted theoretical physicist, proved he's no ornithologist when a bird showed up at his window.

The season 5 Big Bang Theory episode 'The Ornithophobia Diffusion' tackles Sheldon's fear of birds when he finds one standing innocently outside his apartment window. Despite the bird having no way to come inside, Sheldon is appalled at its mere existence. He tries to ignore it, but that doesn't work, so he then calls animal control and incorrectly identifies the bird as a blue jay. Sure, the bird is blue in color, but it's not a blue jay.

Big Bang Theory Sheldon Casino Buffet

Sheldon then calls Dr. Amy Fowler (Mayim Bialik) and Dr. Bernadette Rostenkowski (Melissa Rauch) to the scene. As a neuroscientist and microbiologist, respectively, neither of them know enough about birds to correct Sheldon on his error. This isn't the show's first onscreen mistake, but it did bother a particular subset of fans: the birders.

Birders caught the mistake immediately

Birder and Big Bang Theory viewer Sharon Stiteler (who tweets under the handle @birdchick) took to Twitter on the day the episode aired to notify the series' executive producer and co-creator Bill Prady that birders were 'buzzing' about Sheldon 'misidentifying a blue jay.'

Prady responded the same night the episode aired, confirming that Sheldon did make a mistake and clarifying what type of bird it actually is: 'The bird was a black-throated magpie jay. Sheldon misidentifies it because he doesn't know birds.' It clearly wasn't a huge issue amongst casual, non-bird-watcher fans, though, as the tweet only got ten likes.

For the uninitiated, one clue to identifying a blue jay from a black-throated magpie-jay is in the tail. The magpie-jay's tail is very long — longer than the rest of the bird's body. The blue jay, however, has a much shorter tail with black markings on it.

Generally, the two birds won't be anywhere near each other. Black-throated magpie-jays live along the west coast of Mexico, while blue jays live in the northwest and eastern half of the United States. So, what exactly was a magpie-jay doing in Pasadena, California, where The Big Bang Theory takes place? Well, Bernadette said it may have been a pet, and this species is occasionally kept in captivity. After all, Sheldon himself was ready to keep it by the end of the episode. Sounds like we'll have to chalk the bird's appearance in California up to someone keeping a very uncommon pet and rather than an oversight on bird species.

The Big Bang Theory star Kaley Cuoco has joined TikTok – and she made her debut on the app by recreating an iconic scene between her character Penny and highly strung neighbour Sheldon Cooper.

In the video, Cuoco hid behind a door while actor Pierson Fodé – who she is currently filming TheMan From Toronto with in Canada – started knocking on it. He then lip-synced along to the episode's audio, which sees (or more accurately, hears in this case), Sheldon (Jim Parsons) relentlessly call out Penny's name.

Related: Kaley Cuoco's Big Bang Theory co-star pokes fun at her on Instagram

Fed up of his constant pestering, she repeats his name after every rap, too, before Cuoco, 34, opens the door and reveals herself.

The specific scene was lifted from the 23rd episode of The Big Bang Theory's second season, titled 'The Monopolar Expedition'.

While Sheldon's incessantly knocking was a frequent joke in the popular sitcom's earlier seasons, it died off towards the end of its 12-year run. It's safe to say that fans still look back on it fondly, though – well, more fondly than Penny would do anyway, eh?

In addition to Fodé, Cuoco is set to appear opposite Kevin Hart and Woody Harrelson in upcoming action comedy The Man from Toronto.

It centres on a screw-up, who is forced to team up with a deadly assassin after the two are confused for one another while staying at an Airbnb.

Big Bang Theory Slots

The Big Bang Theory aired on CBS and CBS All Access in the US. You can buy the complete boxset now on DVD and Blu-ray.

Big Bang Theory Sheldon Christmas Present

Digital Spy has launched its first-ever digital magazine with exclusive features, interviews, and videos. Access the latest edition with a 1-month free trial, only on Apple News+.

Big Bang Theory Sheldon Christmas

Interested in Digital Spy's weekly newsletter? Sign up to get it sent straight to your inbox - and don't forget to join our Watch This Facebook Group for daily TV recommendations and discussions with other readers.