Insectivorous birds are species that primarily feed on insects and other small invertebrates. These birds play a crucial role in controlling insect populations, which can help maintain ecological balance. Common examples include swallows, warblers, and flycatchers, each adapted to catch insects in various ways, such as aerial hunting or gleaning from foliage. These birds are often found in diverse habitats, including forests, grasslands, and wetlands. Their diets can vary seasonally, with some species also consuming fruits and seeds when insects are scarce. The presence of insectivorous birds is an indicator of a healthy ecosystem, as they contribute to pest control and biodiversity.