Part of the created world, used for food. In OT times they were also used in sacrifices. In Scripture, birds are used in many metaphors.
Part of creation
See also
Cared for by God
pp Mt 6:26
To be cared for by humanity
Specific varieties of bird
Raven
Eagle
Hen
Cock
Ostrich
Owl
Quail
Sparrow
Stork
Vulture
Birds of prey
Protected at the flood
Used in sacrifice
Used as food
Some not to be eaten
pp Dt 14:12-18
Not to be used as an object of worship
Appearing in dreams and visions
Used metaphorically
Of freedom
Of isolation
Of powerlessness
Of being trapped
Of cruel invaders
Of an object of hatred