Allie started doing this rally cute thing a couple of months ago. She makes a little shrieking sound. It's a call out. She expects us to answer back. It reminds me of those recordings of dolphins under water calling out to each other. Allie does this to figure out where we are in the house; whether we're upstairs or in the kitchen.
It's funny because she used to make a sound with just one pitch. But now I vary the pitch of the sound I make to high and low, short and long, and Allie imitates it and keeps up. It's funny and exciting at the same time. She doesn't have the motor skills yet to make words, but she still has fun while trying to communicate.
It's unbelievable how much personality this little booger has.