Bird Vetch

Bird vetch (Vicia cracca) is also known as tufted vetch, cow vetch, blue vetch, or boreal vetch. It is a perennial herbaceous species in the family Fabaceae. It is native to Europe and Asia but has been widely introduced to other regions, including North America, where it is frequently naturalised and may behave as an invasive species. It is typically associated with disturbed habitats such as abandoned fields, roadside verges, and waste ground.

The species exhibits a climbing growth habit, with slender, trailing to ascending stems that may reach up to two metres in length. As is characteristic of many legumes, bird vetch produces pinnately compound leaves (3 to 8 centrimetres long) with 8 to 12 pairs of narrow leaflets (5 to 10 millimetres). The terminal leaflet is modified into a branched tendril, which facilitates attachment to neighbouring vegetation and enables vertical growth. This climbing strategy may result in competitive suppression of smaller plant species. The root system consists of a well-developed taproot, which may extend to approximately 1 metre in depth.

The flowers are axillary, unilateral racemes bearing 10 to 40 butterfly-like shaped flowers. The corollas are typically violet to purple, and flowering occurs from late spring through late summer. Pollination is primarily done byh bumblebees. In the end, legumes (pods) develop, measuring 10 to 20 millimetres in length and containing 6 to 8 seeds. The pods mature from green to dark brown or black, with seeds transitioning from swollen and green to fully mature and desiccated.

Bird vetch resembles hairy vetch (Vicia villosa), but can be distinguished by its glabrous or sparsely pubescent stems, in contrast to the densely pubescent stems of the latter.

As a member of the Fabaceae, bird vetch forms symbiotic associations with nitrogen-fixing bacteria, contributing to soil nitrogen enrichment. Consequently, it is frequently utilised as a forage crop for livestock and as a cover crop or green manure by farmers. The species may also contribute to erosion control.

Yes, you can eat bird vetch, although its seeds are tiny and not worth the effort of harvesting. The flowers, however, have a light, sweet pea-like flavour with a tiny nectar hit when sucked. Some adveenterous cooks use them as a garnish, scattered in salads, or nibbled fresh.

Seeds and vegetative parts are occasionally used as supplementary feed for captive birds, such as common parakeets (Melopsittacus undulatus).