No, it is a noun. If it is used with another noun (e.g. bird cage), it is technically a noun adjunct, not an adjective. (the word bird is also rarely a verb, meaning to go birding.)
There is no predicate adjective in that sentence. If it read, "Bird feeders are useful by providing us with yearlong enjoyment," "useful" would be a predicate adjective. In this case the simple predicate "are" connects the adjective "useful," included in the complete predicate, with the subject "bird feeders."
The word can be used like an adjective in some compound words, such as birdhouse and birdsong. One can also use the adjective, "bird-like." The most common adjective meaning "related to birds" is avian, from the Latin, avis.
The primary adjective is "injured" describing the noun bird. "Her" is a attributive adjective as well, but may also be classified as a possessive pronoun.
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in spanish, a bird is called 'ave' and there exists an adjective, avian, meaning either bird-like or bird-related.
The adjectives in the sentence are:injuredthismy (pronoun, a possessive adjective)her (pronoun, a possessive adjective)
Stork is a noun. It is a type of bird.
If you're looking for an English adjective derived from Latin, it's "avian", from avis, "bird".In Latin itself, the adjective is actually aviarius(-a, -um).
The adjectives in the sentence are:injuredthisyour (pronoun, a possessive adjective)her (pronoun, a possessive adjective)
Yes, the word 'bird' is a noun, a word for a thing.
Yes, as in "The early bird catches the worm".