Cackler and Oscine

Cackler noun - Any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae.

Oscine and cackler are semantically related. In some cases you can use "Oscine" instead a noun "Cackler".

Oscine noun - Passerine bird having specialized vocal apparatus.

Cackler and oscine are semantically related. Sometimes you can replace term "Cackler" with "Oscine", this nouns are similar.