There are actually two in this movie. When Edmond and the gang are tied up in the trailer and Hunch breaks in to try to kill them, we see a tiger skin rug. Heck, Hunch even gets bitten by it. Now, a tiger skin rug would be perfectly normal if this wasn't a city inhabited by animals. Think about that for a moment.
The second one is about Hunch. Notice his thin, bare, pink neck. He's supposed to be a pygmy owl, right? Pygmy owls - heck, no owl has a thin neck like that. That neck of his most likely used to have feathers covering it. It's made quite obvious that the Duke hates Hunch and abuses him. So, how do you think Hunch lost all those feathers?
There's also a scene in which Hunch is singing a song, and finishes with "most of all, Mom... I miss you". It may be just a song, but considering that the Duke is his uncle, who's willing to bet the Duke killed his sister for some reason?
More practical explanation: Chanticleer's crowing awakens the sun every morning. One morning it accidentally wakes up a little early, then (as shown in the movie) it basically realizes its "alarm clock" (Chanticleer's crowing) hasn't gone off yet and goes back to bed.
Chanticleer's crow energizes the sun. There was a little bit of left-over from yesterday's crow so the sun came up a little. Once it ran out of crowing energy, it went back down until Chanticleer's super-crow, which super-energized it, causing it to rise straight to the middle of the sky.
As a small child, this Troper always assumed that the Sun saw how the other animals mocked Chanticleer and drove him away so she refused to rise again as punishment for their bad behavior.
When Goldie (a pheasant) loses her shoes, we get a closeup of her (albeit, stockinged) feet, which seem human-like with toes etc. However, doesnt every other birdlike-entity in the movie have talons? All other birds in the movie at least look like birds. Goldie is essentially a human with a fowl head.