Canal de Castilla Rey (Palencia), considered the beginning of the Northern Branch, Valladolid and Medina de Rioseco, lying at the end of the Southern Branch and Campos Branch respectively. The countryside crossed by the canal is of interest for its birdlife. In the Tierra de Campos there are two large Special Protection Areas ("La Nava-Campos Norte" and "La Nava-Campos Sur") which are notable for the birds such as great bustards ("Otis tarda") which live in the dryland farming areas (sometimes described as "steppes") which are typical of the region. The canal, on the other hand, provides habitats for wetland birds such as the
The Three Little Birds her brothers on the way, and when she struck the dog, turned it into a handsome prince. They went back home to the fisherman. The second son went hunting and, when he grew tired, played a flute. The king heard this and found him. He did not believe he was the fisherman's son, so the second son invited him home. There, the bird sang the story of what happened to them. The queen was let out of prison, the false sisters killed, and the daughter married the prince. The Three Little Birds "The Three Little Birds" is a German fairy