Rio/Fridge

Fridge Horror

 * The spinning "I'm a pretty bird!" caged Military Macaw. Mistreated, high-intelligence parrots can quickly sustain irreversible mental damage, so the depiction is all too accurate of Real Life. Edges into Nightmare Fuel territory when one realizes a bird like that likely wouldn't survive long at all after being released into the wild...
 * Not to mention the Unfortunate Implications with Blu and Jewel's offsprings at the end of the film.
 * Not necessarily. Blu and Jewel's offspring could be inter-bred with other compable species of bird to create fertile mix-breeds and eventually work back around to pure-breeding. Selective breeding can be used to save near-extinct species.
 * There's also the possibility that there are others of their kind scattered all over the world by smugglers. It would take significant legwork to gather them up, but that's how they got Blu and Jewel together.
 * Not quite, especially to someone who has worked with zoo animals (Education dept. intern). Animals are actually quite open to breeding with their immediate family members. In fact, that is the reason why some zoo animals have to be sterilized (like white tigers, all being siblings) to prevent accidental inbreeding.
 * Nigel is full of this. The other birds seem quite terrified of him and he outright calls himself a "bird murderer". Any thens there's the above insane Military Macaw and the fact Nigel is the one who tortures the other birds (and he introduces himself by saying "I know I'm not a pretty bird" and uses the phrase quite a bit), it's quite unsettling to imagine just what he did to that poor bird...
 * Just the stress and prolonged caging would have been enough to Break the Cutie, as it often does in the real world; Nigel was just the black icing on that mud pie.
 * Nigel says a parakeet stole his spotlight, said parakeet being shown along with other relics of his stardom. If one looks closely at the birds in the smuggler's lair, you'll see a parakeet looking much like it is among the prisoners...
 * Nigel's Moral Event Horizon is forcing a little bird to pick a piece of chicken out of his beak. Already horrifying, but imagine putting yourself in that position: Since a chicken is also a bird, that would be the equivalent of picking a piece of human flesh from the mouth of a very large person.
 * More like getting a piece of mammal ham out of a homicidal maniac's teeth. Cockatoos are omnivorous.
 * Even though Nigel and the chicken are different species, in this movie all birds are sentient, and Nigel's habit of eating chicken is considered akin to cannibalism. One of the birds smugglers even calls him a cannibal.
 * Also, Nigel finds a poor little bird at the wrecked dance place. Suppose that poor bird really didn't know where Blu and Jewel went, and Nigel exploded the poor thing...

Fridge Logic

 * Linda's computer's password is improbable. Blu taps "down" from the directional keys, some from the F-line and probably the "Pause/Break" or "Print Screen" key.

Fridge Brilliance

 * Nigel is quite Dangerously Genre Savvy most of the time. This makes perfect sense as he used to be the hero in movies and television shows himself, meaning he's probably pretty well aware of tropes in such films.
 * At the end of the film, why was Blu able to  Its all those Vitamins Linda was sure to make him take.