Greetings from a fellow newbie, fellow Australian, and fellow Nihonophile (is that a word?) No idea what your chickens are, but they look lovely.
And congratulations on the new little 'chick' on the way too! If you like to feel bubs moving around, have you tried listening to the heartbeat too? Apparently you can often hear it if you put your ear directly to the bump, though it depends what potision bubs is in, and various other things, so don't worry if it doesn't work. I say apparently because I was never so flexible at to reach my own, but hubby tells me it works. I think that's from about 30 weeks onwards.
And good for you on taking the matrilineal name! Is that a Japanese custom? (whoops, sorry, off topic!)