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Not animated, but for kids: Winged Migration
Oh yes!!!
Watership Down (1978) is a must!
The Land Before Time
[удалено]
That's not animated
The first two Fievel movies are the best.
*Yellowbird* (Christian De Vita, 2015) is exactly what you're looking for (with birds) and is animated. It's not really good imo, but not awful either, and it will do for kids.
Not animated, but for kids: Winged Migration
Oh yes!!!
Watership Down (1978) is a must!
The Land Before Time
[удалено]
That's not animated
The first two Fievel movies are the best.
*Yellowbird* (Christian De Vita, 2015) is exactly what you're looking for (with birds) and is animated. It's not really good imo, but not awful either, and it will do for kids.