Prior to migrating in autumn Swallows will spend time resting and then gorging on insects to build up energy reserves for their long migration flight.

---

Prior to migrating in autumn Swallows will spend time resting and then gorging on insects to build up energy reserves for their long migration flight. Phone and light cables offer ideal congregating points

---

Size: 5800px × 4264px
Location: Scarborough, UK
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -saharan, 4, aerial, aerodynamics, aves, avian, barn, birdwatching, blooded, bristles, chambered, commensural, conservation, contour, cup, dinosaur, energy, feathers, filaments, flocks, forager, hawking, heart, hirundinidae, hirundo, insectivore, keratin, living, markings, mass, migrant, migration, movements, mud-pellet, nest, ornithology, oscines, passeriformes, passerine, perched, plumage, preening, primary, quill, rectrices, rictal, rustica, scales, secondary, shaft, song, streaks, swallow, tail, territorial, vertebrate, warm