To explain some more about what kind of bird is "alouette":
In Québécois & other versions of Canadian French the default meaning of 'alouette' is any of several meadowlarks of the genus Sturnella. In French of France its default meaning is skylark, Alauda arvensis. Because the song "Alouette" is from Québec, I figure it's talking about a meadowlark.

Of course that explanation gets sorely tested, downright fowled up, when the French discuss North American ornithology, or the Québécois discuss European ornithology.

I like to imagine this song could have been a woman's work song, to be sung whilst plucking domestic birds, both to make the work pass more easily and to express a certain longing for the chickens or ducks to be closer in size to the meadowlark, plucking being a thoroughly tedious task, which longing would disappear once plucking was done and the lone bird must feed many mouths.