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nouna sweetish crystalline amino acid involved in the synthesis by the body of cysteinetype of:
Definition that contains serine
- kingfisher nonpasserine large-headed bird with a short tail and long sharp bill; usually crested and bright-colored; feed mostly on fish
- chatterer passerine bird of New World tropics
- caprimulgid mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects
- oscine bird passerine bird having specialized vocal apparatus
- tyrannid a passerine bird of the suborder Tyranni
- nightjar mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects
- caprimulgiform bird long-winged nonpasserine birds
- cotinga passerine bird of New World tropics
- piciform bird any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood
- oscine passerine bird having specialized vocal apparatus