Okay tell me if I'm wrong but i get the feeling that the "No Birds" reference is pointed at Danny L Halre/PC Music....? IDK the whole circumstances as to why Finn left/doesn't talk about PCM but the "No Birds!" thing seems off/shady to me.
"birds" is British slang for women/girls. I think it's more likely to refer to this as Finn is a gay man but this is just a guess also