Why do the buzzards always return to Hinkley, Ohio on March 15, every year?

Answer 1

"The first legend of buzzards in Hinkley, Ohio goes back to the Great Hinkley Hunt on Christmas Eve, in 1818. The local settlers deciding that the township needed to be made safe for their livestock, gathered together about four hundred men and boys, with guns and clubs and completely surrounded the township of Hinkley. "

As the story goes, the townsfolk began marching toward the center of town, driving all the game in front of them, and killing virtually every wild animal they encountered.

"The settlers took some of the deer, and the wild turkeys for the holiday dinners, I'm sure, but left all of the other dead animals out in the snow, and when spring came of course there was sort of a virtual buzzard smorgasbord waiting out there and that supposedly attracted the buzzards for the first time and ever since 1819 they've been coming back here in March."

Answer 2

i don't know why they come back every year, but I doubt a one time event would imprint all generations that followed to stop for almost 200 years