スミソニアン博物館さんのインスタグラム写真 - (スミソニアン博物館Instagram)「Did you know over 300 bird species call Washington, D.C., home? This city is an important habitat for both year-round and migratory birds, all of which have adapted to survive in an urban environment.⁣ ⁣ In the @SmithsonianGardens Urban Bird Habitat, see how the structure and material of bird nests depends on conditions and materials they encounter. For example, birds living in urban areas utilize trash as a nesting material.⁣ ⁣ The type of nest a bird creates is also dependent on what predators are in the environment. Pendant nests consist of long, pliable materials that dangle from branches, making the bird’s home hard for predators to reach, while a scrape nest is not in a tree at all, but instead a shallow hole in the ground hidden among tall grasses.⁣」5月23日 20時25分