Record 01
The strength at the rear
The rear pair carries the greatest strain when the sleigh climbs, turns sharply or lifts away with a full sack. Donner supplies a steady pull that prevents the load from dragging the formation out of shape.
His power is most visible at low speed. Deep tracks found at several suspected departure sites show one set of prints pressing farther into the snow than the others, then vanishing at exactly the point where the sleigh became airborne.
Record 02
The sound of thunder
Donner’s name means ‘thunder’, and witnesses sometimes report a low rolling sound after the sleigh passes. It is quieter than a storm and too sustained to be a single hoofbeat.
Researchers believe the sound comes from air compressed by the rear formation during steep climbs. Donner’s unusually broad chest and powerful stride may create the first pressure wave, with the sleigh runners adding the faint rumble that follows.
Record 03
Paired with Blitzen
Donner and Blitzen have flown together for so long that their timing is almost identical. Donner provides sustained force; Blitzen responds rapidly to gusts and electrical weather. Together they keep the sleigh stable when conditions are at their worst.
In the stables, Donner is quiet and unhurried. He conserves energy, dislikes fuss and has been observed sleeping through weather that kept the rest of the team awake—until Blitzen stood up, at which point he was immediately alert.