Flying penguin on 17th-century painting

Flying penguin, by Dirk de Quade van Ravesteijn (1565–1620)

Apparently, penguins could not only fly on this video, but also on this 1610 painting.

Leiden University weekly Mare in the Netherlands writes about it (translated):

The flying penguin

[Dutch painter] Dirk de Quade van Ravesteijn (1565-1620) painted at the [Prague] court of [Habsburg emperor] Rudolf II, and made two animal albums there: one about four-legged animals, and one about birds.

He had a great interest in animals that were interesting from a natural history perspective. [Art historian] Rikken: “He chose animals with abnormalities, such as a chicken with three legs, or species that had just been discovered.” The Magellanic penguin was then a fresh discovery. Biologist Carolus Clusius – in Leiden known as the first boss of the Hortus Botanicus – described the species in 1605.

But what did Quade know about that? And how is it that the drawing of the coat is so accurate, while Clusius’ publication was in black and white? Again, Walker suspects that the artist has seen a stuffed specimen. “How the animal moved, about that he had of course no idea. You do see more artists struggling with penguins; they are so different from other birds!”