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
Barugh (Great and Little) with 2.1 households, and a quite large total assessed tax (6.5 geld units) Little Barugh also appears in the Doomsday book. Again it is described as very small, with only 2.1 households. The total tax assessed for Little Barugh is again quite large (6 geld units). Great Barugh and Little Barugh are both contained in the parish of Kirby Misperton, Little Barugh was enclosed around 1600. Both Little and Great Barugh contain Wesleyan chapels, the one at Great Barugh having been erected in 1899. Both buildings are now dwelling houses. The church of the Holy Saviour was built in 1850