Medium-sized bird (about 34 cm or 13.5 in) of very dark plumage, almost black, with greyish tones in the breast and nape area, where it looks ashen. Pale blue eyes. It is the smallest corvid present in the province.
Rocky gorges, rock walls and pits, screes, old groves, ruined buildings and urban environments.
Species resident all year round in the province. It breeds from April. An annual laying of 4 to 6 eggs. Nest in tree cavities, cracks or holes in walls. Although it is an omnivorous animal it is the most herbivore of all the corvids. Gregarious habits.
It can be watched especially in the Fuente de Piedra Lagoon and the surroundings of Campillos. In the Great Path it is present in stages 11, 12, 13, 15, 18, 20, 24, 28 and 34.
Jackdaws have an elaborate social behavior. They are organized in groups to feed and sleep, with hierarchies even at the time of breeding. They have a reputation for being very intelligent, able to remember places, learn and memorize actions. Popular lore dismisses them as thieves, like magpies. Actually they are opportunists, taking advantage of prey and resources obtained by other species.