How are swifts and hummingbirds alike in flight?

Swifts and hummingbirds, both members of the order Apodiformes, are renowned for their superb mastery of the air and agile flight capabilities. Their similarities in flight are largely attributed to shared anatomical features in their wing structure, which some ornithologists suggest may be the result of convergent evolution.1

Key similarities and characteristics include:

• Wing Morphology: Both groups possess narrow, curved wings that allow them to fly rapidly and maneuver with ease.2
• Anatomical Proportions: They share a specific wing structure characterized by a short humerus and a strikingly long hand, with primary flight feathers that are significantly longer than the secondaries.3
• Aerial Lifestyle: Both are considered overwhelmingly aerial birds, relying on flight for essential behaviors such as foraging and courtship.4
• Locomotion: They share a notable lack of walking ability or other forms of non-flying terrestrial locomotion; even for short distances, their primary mode of movement is flight.4

While they share these aerodynamic traits, their specific flight behaviors differ; for instance, hummingbirds are uniquely capable of hovering and flying backward, whereas swifts are known for their high-speed, continuous flight while foraging for insects.24