What colour would a foal to buckskin stallion and black mare be?

A foal born to a buckskin stallion and a black mare could be a few different colors:

* Bay: This is the most likely outcome. A bay horse has a black mane and tail, with a reddish-brown body.

* Brown: Similar to bay, but with a brown mane and tail.

* Black: The foal could inherit the black coat color from the mare, but it would still have the "buckskin" gene which could influence the shade of black.

The exact color of the foal depends on the specific combination of genes inherited from both parents.