The collared dove makes a similar sound (though three notes rather than two), so reports of cuckoos calling before April are usually mistaken.

• 白颈鸽也能发出类似的叫声（尽管3注，而不是两个（译者注：不知道怎么翻译好） ，所以有报道说四月前就听到布谷鸟叫通常是错误的。