The Yellow Dello is the rarest and most beautiful bird in Southern Potamia.
Big Bird -- Dive Eagle -- Gold Eagle -- Rust Bird -- Sprinter
Suuunny days, sweeping the clooouuds away... erm, sorry.
Unless it's the Japanese name for a species, there is no bird called a dive eagle. The gold eagle could be named after the goleden eagle, but since it appears in Goldore's mansion, where most of the enemies have "gold" in their names (gold warrior, gold bear, gold knight), it could be coincidental.
IMAGE: A golden eagle
There is no such thing as a "rust bird" in the English language. This could be the Japanese name for a species, or "rust" might simply refer to its colour, which is "rusty" in places (although most of the body is pink).
Back to...BIG BIRD, SPRINTER

These monsters appear to be composits, taking elements from several species of bird - I can make out the legs of an ostrich, the body, neck and head of a vulture and the beak of an ibis. The names are generic.
DIVE EAGLE, GOLD EAGLE

RUST BIRD

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