Chatterbox Caleb

Over the last two weeks, Caleb has become increasingly talkative at home. He'll wake up in the morning and start blabbering non-stop. A daily morning blabber sounds something like this "pika-pika, bea-booka..ohhh" sometimes, it will be mixed with words that he already knows and sometimes, he'll be pointing here and there as though he is saying something really important and this will be accompanied with a lot of "Ohh" here and there. He's also becoming very good at imitating us in our speech and usually his attempts are pretty accurate and he is picking up new words quite quickly.
Last week, he kept saying "up" and "out". When he wants to climb up a chair or sofa or wants to sit on our lap, he'll say "up" and sometimes point with his finger as well. When we go out, out of the blue, he'll just say "out, out".The word for this week is "no more". He was watching sesame street and when it ended, he waved his hands and started saying "no more, no more". Now when he finishes his meals, or he doesn't want any more of what he's eating, sometimes he'll go "no more".I think his speech for "no more" developed from "Elmo". Last week, he started to say "Elmo" and "Mo-mo". From "mo-mo", it slowly became "more-more". And then it became "no more". (That's Mummy's silly theory. Sounds a bit far fetched??? But Mummy really saw him start from saying "mo-mo" to "more-more" to "no more"!)
Anyway, one other thing that Mummy noticed is that at least half the words that Caleb is picking up starts with the letter "B". Mummy's wondering whether is it that words starting with "B" are easier to pronounce? Caleb's vocabulary of "B" words include:bird, bus, bear, ball, boat, bye, baby, bike, bowl, bath, bathe, bed, box and the latest addition is bite. These "B" words are the ones that Caleb can say when he sees the object without any prompting. He doesn't say them all the time but only when he feels like talking.
2 small observations that Mummy has made about Caleb's chattering:
1) He tends to be much more talkative when he is at home with Mummy or Daddy. When he is out, he doesn't speak so much but prefers to point and go "eh eh eh" to communicate with Daddy and Mummy. Think a safe and familiar environment is important to encourage his speech development.
2) sometimes, he forgets words that he used to say when we stop talking about the subject for a period of time. One of the first words that he started to say when he was about 9 or 10 months was "duck". He used to bath in a rubber ducky tub and he'll be able to point to it and say "duck" quite accurately. But Mummy accidentally burst the rubber duck when he was 10 months old and since then that's the last that we talked about ducks. Recently we saw a picture of a duck and when Mummy asked him what that was, it was no longer duck to him. Now he calls it "duk". Mummy's thinking that maybe it's because at this age, their memory is still pretty short term so he can't really remember how he used to pronounce the word.