bird / burd / burred are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
bird: (noun) warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings. (noun) the flesh of a bird or fowl (wild or domestic) used as food. (verb) watch and study birds in their natural habitat.
burd: NA
burred: (verb) remove the burrs from.
bird: b·ER·d
burd: b·ER·d
burred: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)