The Aves Oenanthe oenanthe, commonly known as the Northern Wheatear, is a small passerine bird that belongs to the Old World flycatcher family, Muscicapidae. This bird is known locally in the Comunidad Valenciana as "Collalba Gris."

Here are some key features of the Oenanthe oenanthe:

• Appearance: The Northern Wheatear is characterized by its striking plumage. Males have a distinctive black facial mask, white underparts, and a grey back during the breeding season. Females are slightly duller, with less pronounced coloration.
• Size: It typically measures about 14.5 to 16 centimeters in length with a wingspan of approximately 26 to 32 centimeters.
• Habitat: This bird favors open rocky terrains, including moorlands, coastal regions, and areas with scattered trees. In the Comunidad Valenciana, they are often spotted in agricultural lands and hilly regions.
• Migratory Patterns: The Northern Wheatear is a long-distance migrant, breeding in Europe and Asia and wintering in Africa. It can cover significant distances during migration, with some birds traveling from as far as Alaska to Africa.
• Diet: Their diet primarily consists of insects and other small invertebrates, which they often catch on the ground or by making short flights.

The presence of the Northern Wheatear in the Comunidad Valenciana adds to the region's rich avian diversity and offers bird watchers a chance to observe its fascinating migratory behavior and adaptable nature.