Bird vetch, also known as tufted vetch or cow vetch, is a plant that belongs to the pea family. This plant features small, purple flowers that grow in clusters and are a favorite food source for many species of birds. Apart from its ornamental value, bird vetch is also used for medicinal purposes. While bird vetch is its most commonly used name, it has several synonyms. These include blue vetch, cat pea, and tiney. Each of these synonyms often relates to the plant's form, color, or features, making it easier to identify and distinguish from other types of vetch.