Maggie's started to babble a bit. She's really good at the "b" sound nowadays. (I don't know what happened at the end of the video with another baby's voice on the recording. One of those "oooo, spooky" things.)
She pulled herself up to standing in her crib for the first time! Time to move that mattress down.
Even though she sounds upset, this is her squealy "it tickles!" laugh. If you could see a close-up of her face, you'd see the wicked smile.