Aunque

Subordinating conjunction

  su

Determiner

  vuelo

✈️

Noun

  es

Auxiliary

  rápido

Adjective

,  estas

Determiner

  aves

Noun

  son

Auxiliary

  reticentes

Adjective

  a

Adposition

  volar

✈️

Verb

  cualquier

Determiner

  distancia

Noun

.

Although their flight is fast, they are reluctant to fly any distance.

Although their flight is fast, they are reluctant to fly any distance.