spinetails

Spinetails are a group of small, insectivorous birds belonging to the family Trochilidae, commonly known as hummingbirds. The name "spinetail" is derived from their distinctive, elongated central tail feathers, which are often stiff and spiny. This trait sets them apart from other hummingbirds, which typically have more rounded or forked tails.

Spinetails are primarily found in the tropical regions of Central and South America, with some species extending into the southern United States. They inhabit a variety of environments, including forests, scrublands, and gardens, often at higher elevations. These birds are known for their iridescent plumage, which shimmers in shades of green, blue, violet, or copper depending on the light and the species.

Like other hummingbirds, spinetails are highly specialized nectar feeders, using their long, extendable bills to access flowers. Their rapid wing beats, which can exceed 80 beats per second, enable them to hover in place while feeding. In addition to nectar, they also consume small insects and spiders for protein, which is essential for reproduction.

Spinetails exhibit a range of behaviors, including territoriality and courtship displays. Males often perform elaborate aerial dances to attract females, accompanied by rapid wing movements and vocalizations. Nests are typically small, cup-shaped structures made of plant fibers, spider silk, and down, often concealed in dense vegetation.

There are approximately 12 species of spinetails, with some of the most well-known being the Rufous Spinetail (*Selasphorus rufus*), the White-tipped Spinetail (*Selasphorus sclateri*), and the Green-tailed Spinetail (*Selasphorus flammula*). Conservation efforts are important for these birds, as habitat loss and climate change pose threats to their populations. Many species are also sensitive to pesticides and environmental pollution.