Antonio Segura Donat is a Spanish artist who often works under the pseudonym Dulk, which he adopted originally for use as a street artist and muralist.
Dulk creates images that blend aspects of magic realism and fantasy, often with themes of animals, and in particular, birds.
He works in a variety of traditional media, paint, pens, pastel and markers, sometimes over silkscreen base prints. He also works in sculpture.
His website has galleries for Art, Illustration and Street art, and there are videos of him working. He has prints and other items for sale in Big Cartel. There is a collection of his work, The dulk; I believe the text is in Spanish, but you can find it from U.S. sources. Some of his original art can be found on Thinkspace.