Well, Foot for one. And frankly, it fits perfectly within a mod such as EB; despite the fact that the bird songs will never have their own proper accents and stuff.

Anyhow: you A.G. (please forgive me for abreviating your name) apparently never noticed this; hence you couldn't care. Thread creator on the other hand has this type of thing for a hobby, so he does. Given the fact that many copies of many lookup guides such as "What bird did that?" are sold; I imagine there must be a niche for mods that try to get at least their bird species right...