While we usually do not think much about how much babies talk - they are taking in all sorts of information about language from a very young age. Patricia Kuhl, a prominent researcher, refers to babies as linguistic geniuses! Watch her TED talk here: https://www.ted.com/talks/patricia_kuhl_the_linguistic_genius_of_babies?language=en

Then, read The Word Gap: The Early Years Matter here: https://www.naeyc.org/resources/pubs/tyc/feb2014/the-word-gap and think about what sorts of socioeconomic factors might impact an infant's early language production.