Pronunciation: [ɐljˈʊla] (IPA) 
The word "alula" refers to a small projection on the wing of a bird that helps with flight control. It is spelled with the letters A-L-U-L-A in English. The IPA phonetic transcription of this word is /əˈlu.lə/, with the schwa sound at the beginning and end, and the stress on the second syllable. The spelling of this word reflects its Latin origins, where it was spelled "alūla" meaning "winglet" or "little wing."
The term "alula" refers to a specific feathered anatomical structure found on birds that assists in flight or gliding. It is more commonly known as the "bastard wing" or "spurious wing" and is located on the front edge of the bird's wing, near the wrist.
The alula consists of a cluster of small feathers that are attached to a modified digit on the bird's hand, known as the "thumb". This digit is separated from the main portion of the wing, allowing the alula to move independently. The alula feathers are relatively stiff and can be extended or retracted by the bird, thus altering the shape of the wing during flight.
This unique adaptation plays a crucial role in allowing birds to maintain stability and control during flight. By controlling the positioning of the alula feathers, birds are able to adjust the airflow over the wings, enhancing lift and reducing turbulence. The alula therefore acts as a type of "spoiler", preventing stalling and enhancing maneuverability, especially when birds are flying at low speeds or during takeoff and landing.
The term "alula" also has Latin origins and originally referred to the jointed, wing-like appendage found in certain insects and bats. However, its usage today is predominantly limited to the feathered structure found on birds.
The word "alula" comes from Latin. Its etymology can be traced back to the Latin word "ala", which means "wing". The diminutive form of "ala" is "alula", which specifically refers to the small, feathered extension found on the first digit of a bird's wing.
