The Big Bang Theory (2007– )
3 user 1 critic

The Ornithophobia Diffusion 

Sheldon tries to overcome his fear of birds, while Leonard and Penny attempt to hang out together strictly as friends.



(created by), (created by) | 6 more credits »

Watch Now

From $1.99 (SD) on Amazon Video






Episode complete credited cast:


A blue jay perched on his apartment window ledge is too much for ornithophobic Sheldon to handle. As no one - even the authorities (gasp) - seems to want to help him shoo away the bird, a scared Sheldon does whatever he can to get rid of the bird in any way he can. He turns to his two biologist friends, Amy and Bernadette, who try to help him get him over his fear. Their attempts have unexpected results. Meanwhile, Penny asks Leonard if he wants to go see a movie with her. He realizes that Penny's invitation is not a date, despite he deep down wanting it to be. But once he gets over the notion that this event is not a date, Leonard is able to relax and enjoy his time out, even more than when they were actually dating. As Leonard makes it abundantly clear to Penny that it not being a date has its own consequences, Penny decides to take her own actions to prove to Leonard that it is indeed not a date. Written by Huggo

Plot Summary | Plot Synopsis




See all certifications »




Release Date:

10 November 2011 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
See  »

Did You Know?


Howard said I'm starting the movie before George Lucas changes it. In 2014 Lucas Arts was sold to Disney. See more »


When Bernadette takes the photo of Sheldon and his bird, the bird looks to the left (on the phone's screen, you can clearly see when the photo is being taken). On the posters in the staircase, the bird faces the camera almost directly. According to the bird's viewing direction, the photo must have been taken about two seconds later. See more »


Sheldon Cooper: Age seven, a blood-thirsty chicken chases me up a tree. Age 12, a magpie tries to steal the retainer out of my mouth. Age 16, a parrot in a pet store calls me fat ass. Need I go on?
Raj Koothrappali: Yes, please. This is way better than the movie.
See more »

Crazy Credits

CHUCK LORRE PRODUCTIONS, #366 [Image of a cluttered desk containing a Mac SE, a glass of bourbon, dirty ashtrays, pencils, erasers, etc.] This photograph was my vanity card when I was working on Grace Under Fire and Cybill. I remember deciding on its composition by asking myself what were some of my favorite things. The answer, as you can see in the picture, was tobacco, bourbon and an old Mac computer. Eighteen years later, I still love my Mac. The other two items, despite my eternal affection, have been replaced with a bronchial inhaler and a metal folding chair in a church basement. See more »


References Star Trek (1966) See more »


The Big Bang Theory Theme (Instrumental)
Composed and Performed by Barenaked Ladies
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

very clever, good episode
20 June 2013 | by (Brooklyn NY) – See all my reviews

This is one of their better episodes. Besides being funny very often and showcasing Parson's (Sheldon) great acting abilities, I found the episode to be be very CLEVER about the tired old topic of nerdy, low self-esteem Leonard groveling for sex from pretty powerful Penny, but NO! Usually you NOT ONLY SEE this (Leonard's groveling), but you have to HEAR them all discussing all aspects of coitus -- wanting it, pursuing it, getting over it, etc, etc. Here, though, it was very cleverly well done. Since former lovers Leonard and Penny said they were on a friendship date, not the usual sex-romantic date, Leonard (and then Penny too) changed the usual routine and conversation -- like speaking his own mind, demanding his own choice of movie, hooking up with another girl while on the date. So, to repeat, I usually wince when I see Leonard and Penny speak openly and cloyingly about their love life, here it was rather fresh, different. Good job.

The second half of the episode was also nicely done -- about Sheldon trying to shoo a bluebird away from his apartment. The Leonard-Penny half was mostly clever with some comedy thrown in. The Sheldon-blue bird half was mostly Sheldon outraged at this comedy best.

1 of 1 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
The Cooper Extraction: Sheldon's laptop wwscd
Penny's legs in that skirt. smbarnes-79828
Retinal Scanner ToadofTruth
I quite enjoyed The Military Miniaturization Gothish
Ummm...hello... Priya's a lawyer yosoylalinda1-631-452136
So far, it looks like season 10 is off to a decent start... drewstewartcolumbia
Discuss The Ornithophobia Diffusion (2011) on the IMDb message boards »

Contribute to This Page

Create a character page for: