Plywood, Honey Bee, Animal, Invertebrate, Insect, Bee, Swallow, Bird, Gutter, abode, animal, backdrop, background, barn, beams, beginning, biology, bird, birdnest, branch, built, concepts, conceptual, conservation, creation, ecology, environment, environmental, fauna, fertility, future, home, horizontal, life, nature, nest, nesting, object, ornithology, parenting, protect, protection, rafters, reproduce, reproduction, safe, safety, scene, scenery, science, shelter, structure, support, swallow, weave, wild, wood, wooden, woven, origin, dwelling, taste, bird's nest, box, decoration, light beam, rate, design, zoology, skill, ray, discipline, housing, direction, life science, improvement, rafter, transformation, division, beam, stage set, procreation, building, strongbox, conception, birthrate, light, situation, piece, root, farm building
Barn swallow nest on the top rafters of a small shelter