FAQ

In Brazil, it's traditional for its citizens to wear white when celebrating New Year's Eve. Given the fact that Jewel's broken wing, in the first movie, may have at least 3 months for being healthy and able to fly, the time Blu and Jewel had until the breeding season (which is in November), and the hatching of the eggs, that should bring us to January. Plus, the chicks fledge lasts about 2 months, now it is March. Therefore, their children weren't able to celebrate with their parents the New Year, and they should have waited for the next year. With these facts, it's presumable that roughly 2 years have passed since the events of Rio.

Not entirely. Although the first 21% of the movie takes place in Rio, the remaining 79% takes place in the Amazon jungle.

Blu and Jewel's offspring in the first Rio were composed of two male and one female, however if looked carefully, one "male" seems to have a different eye color, possibly hinting that it is actually female. In the sequel, the offspring (now composed of two female and one male) are shown to have aged by weeks to very few months, showing their new physical appearances that seem to reflect both their gender and personalities. Newborns can be at times difficult to tell its sex apart, but as they get older, they develop traits that are common among males and females.