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Baby chimney swifts are altricial—naked, blind and helpless when they hatch. Fledglings leave the nest after a month. [57] The average chimney swift's life span is 4.6 years, [60] but one is known to have lived more than 14 years. It was originally banded as an adult, and was recaptured in another banding operation some 12.5 years later. [61]
Chimney swifts are among roughly 30,000 birds crossing ... Chimney swifts are among roughly 30,000 birds crossing North Carolina at night on their way south, birdwatcher Barbara Driscoll said ...
Every evening from mid-August to mid-October, thousands of Vaux's swifts gather in the sky over the school, then between sunset and dark, fly into a tall brick chimney to roost for the night. Thousands of birds flock in great living tornados, then funnel into the chimney. Estimates of 1,700 to 35,000 swifts have been reported in various years.
There are many birds that are active nocturnally. Some, like owls and nighthawks, are predominantly nocturnal whereas others do specific tasks, like migrating, nocturnally. North Island brown kiwi, Apteryx mantelli [1] Black-crowned night heron, Nycticorax nycticorax [1] Short-eared owl, Asio flammeus [1] Long-eared owl, Asio otus [1]
This flight arrangement might benefit the bird's control and maneuverability in the air. [12] The swiftlets or cave swiftlets have developed a form of echolocation for navigating through dark cave systems where they roost. [13] One species, the Three-toed swiftlet, has recently been found to use this navigation at night outside its cave roost too.
The swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have very long, swept-back wings which resemble a crescent or boomerang. Black swift, Cypseloides niger; Chimney swift, Chaetura pelagica
The swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have long swept-back wings which resemble a crescent or boomerang. Chimney swift, Chaetura pelagica; Apus species, Apus sp. (P) (A)
The swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have very long, swept-back wings which resemble a crescent or boomerang. Chimney swift, Chaetura pelagica