Thunderbird reports from the 1960s
1 case, best-documented first. Page 1 of 1.
We map claims, not creatures. A case is what some source says someone saw or heard, with the link to that source. It is not proof that anything was there, and a retelling counts once, not as a second sighting.

Thunderbird · Northern Cambria, Pennsylvania · 1966
Witness reports that [name] and [name] were searching for Thunderbirds in the mountains of northern Pennsylvania around 1966.