Why is a confirmed sighting of a Mississippi Kite in Indiana considered significant?

Answer

It is far north of the typical breeding range, making the individual bird a local rarity or vagrant

Sightings significantly north of the established territories, such as in Indiana, turn the observation into a significant event because the bird is far outside its typical breeding range.

Why is a confirmed sighting of a Mississippi Kite in Indiana considered significant?
birdKiteMississippi kiterareness