For reference, the conversation you want is an Info conversation that takes place in Chapter 19. Enjoy.
Janaff: Brrr... I'll take on any number of enemies, but this snow is another
story! I think my beautiful wings are icing over.
Ike: That sounds like trouble. Are you going to be able to fly?
Janaff: ...Yes, of course I can fly. These wings aren't for looks, you know?
They're made of flesh and blood and feathers. It's not like I'm some
animal that has to hibernate when winter rolls in. Sheesh! Can't you
beorc tell the difference between comic exaggeration and serious
conversation?
Ike: Um... Oh, I was supposed to laugh, was I? Sorry about that.
Janaff: Oh, my...such sincerity. This is unexpected. It looks like someone
taught you manners.
Ike: Er...
Janaff: By the way, I've been meaning to ask... What are our chances for
victory?
Ike: We're still at an extreme disadvantage.
Janaff: What? That's not the answer I wanted! You gotta do better than that,
beorc general! I'm here! If we lose, how am I ever going to show my
face in Phoenicis again?
Ike: We're at a disadvantage, but I don't intend to lose. There's a man in
Daein that I need to find...and I will be the last thing that he sees.
Janaff: Ha ha! Well said! I wish you could repeat that to today's younger
generation. There are some weaklings back home that I don't even want
to call hawks. I'd love to stick 'em back in their eggs and start over
from scratch.
Ike: Hey, you hatch from eggs?! Eh?
Janaff: I was speaking figuratively. You know? Like...a metaphor? We haven't
hatched from eggs for many generations now. Silly beorc... All right,
I'm outta here. I gotta warm up the ol' wings before battle, or who
knows what might happen.
(Exit Janaff)
Ike: I figured that egg thing was a joke, but I had no idea it ever really
happened... Bird tribes... Go figure.