The most common breeding birds are the willow warbler, common chaffinch, and redwing. These four recorded migration patterns and the minutiae of tree sparrow and chaffinch nesting behaviour. The common chaffinch is still a popular pet bird in some European countries. Taxonomically, there are no officially recognized subspecies of chaffinch within Belgium. This may be an adaptation to avoid competition with the common chaffinch. The logo became known as the "vinklogo" in reference to the common chaffinch. The common chaffinch is about long, with a wingspan of and a weight of . The Beck flows into Cator Park, where it is joined by the Chaffinch Brook. The brambling is similar in size and shape to a common chaffinch. The common chaffinch breeds in wooded areas where the July isotherm is between . It is the natural symbol of the island of Tenerife, together with the blue chaffinch.