We don't have synonyms for bellbird yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are bellied, bell bird and bellbind.
(n) :
Any of various birds with far-carrying bell-like calls, including the New Zealand bellbird (Anthornis melanura), the crested bellbird (Oreoica gutturalis) and bell miner (Manorina melanophrys) of Australia, and the neotropical bellbirds (Procnias spp.) of the Americas.
(n) :
Any of various birds with far-carrying bell-like calls, including the New Zealand bellbird (Anthornis melanura), the crested bellbird (Oreoica gutturalis) and bell miner (Manorina melanophrys) of Australia, and the neotropical bellbirds (Procnias spp.) of the Americas.