The hobby (Falco subbuteo) is a small, agile falcon and summer visitor to Britain from sub-Saharan Africa. Among the most aerial of European raptors, it specialises in catching dragonflies and fast-flying birds on the wing. Arriving in May and departing by October, it uses lowland heaths, farmland, and wetland edges as breeding and foraging habitat.
Feeding Ecology
The hobby is one of very few birds capable of catching swallows, swifts, and house martins in level flight — its speed and agility match these aerial specialists. Dragonflies form the primary prey during summer, particularly during the breeding season when parental foraging demands are highest. Large dragonflies (hawkers, darters) are caught and consumed in flight. Swallows, martins, and large insects (beetles, moths) are also taken regularly.
Breeding Biology
Hobbies do not build their own nests — they use abandoned crow, rook, or magpie nests in tall trees on woodland edges, hedgerow trees, or within woodland. Clutches of 2–3 eggs are laid in June–July (late compared to most British raptors, timed to coincide with fledgling hirundines as prey). Incubation lasts 28 days; chicks fledge at approximately 28–32 days. The hobby's late breeding season makes it sensitive to cold wet summers reducing insect availability during chick rearing.
Population Status
The hobby has expanded its UK range northward through the 20th and early 21st centuries, possibly reflecting climate change-driven range shifts of both the species and its prey. Current UK breeding population is estimated at 2,800–3,500 pairs. It remains amber-listed due to concerns about breeding productivity and the uncertainty of range expansion sustainability.
Welfare Considerations
- Nest disturbance — hobbies are Schedule 1 protected species; intentional disturbance at nests is an offence requiring investigation by RSPB
- Pesticide impacts — insecticide reduction in farmland improves dragonfly and hirundine prey availability essential for chick rearing
- Illegal persecution — occasional targeted persecution where hobbies are perceived to impact racing pigeon lofts
- Collision with overhead lines and fencing during high-speed aerial pursuits
Conservation
Wetland creation and management for dragonfly breeding habitat directly benefits hobbies. Maintenance of hirundine breeding populations — through barn swallow and house martin nest site provision, insect-rich farmland, and reduced pesticide use — supports the secondary prey base. Hobby monitoring through BTO surveys and local raptor groups provides population data essential for conservation planning.