Western jackdaw amounts of silicaceous and calcareous grit to aid digestion of vegetable food and supply dietary calcium. Opportunistic and highly adaptable, the western jackdaw varies its diet markedly depending on available food sources. They have been recorded taking eggs and nestlings from the nests of the skylark ("Alauda arvensis"), Manx shearwater ("Puffinus puffinus"), razorbill ("Alca torda"), common murre ("Uria aalge"), grey heron ("Ardea cinerea"), rock pigeon ("Columba livia"), and Eurasian collared dove ("Streptopelia decaocto"). A field study of a large city dump on the outskirts of León in northwestern Spain showed that western jackdaws forage there in the early morning and
Coat of arms of Saba Coat of arms of Saba The coat of arms of Saba was established in 1985 by the island council of Saba, when it was still part of the Netherlands Antilles. It remained the coat of arms of Saba after the dissolution of the Netherlands Antilles and the subsequent change of Saba's constitutional status into a special municipality of the Netherlands in 2010. It consists of a shield with an Audubon's shearwater ("Puffinus lherminieri") (the national bird) on top, flanked by Saban cabbage (a historically important local foodcrop). In the middle is a representation of the island itself, with a fish,