These two birds are gold inlaid marble, following my tutorial. Both were done in Paint Shop Pro and used Blade Pro for the gold inlay. The patterns are Dover Woodcut patterns from Imsi Masterclips 202000.
The lines of the owl pattern were so light and delicate that I had to go over the Blade Pro several times for the picture to show, but if I used any method of thickening the lines, the detail was lost. As it is, the mouse that the bird is bringing in its beak to its chicks is not visible.
For the horse I used a variant method, described in the tutorial, using silver inlay instead of gold.