It's about plucking the feathers off a bird so I guess technically it is about a dead bird since it would be hard to pluck them off a live one. It's not really a name but if you're looking for weird words to use as one it qualifies.
Allouette is french for Lark and so I would be iffy about since the french don't use it as a name so if she goes to visit France, she might get strange looks..... also yeah, the song is about plucking feathers off a lark.
Since you've been pretty blunt in your vetoes, I'm going to say it straight: You're being ridiculous.
Seriously? "An 'a' ending is trendy"? DUDE. Clover is really not rocketing up the charts -- in fact, I'd bet good money it won't ever chart. In trying to find the most impossibly unique name, you're overlooking great AND uncommon names that you love. Just my two cents.