One of the things I enjoy most about spring is when I walk about my yard at this time of the year bird songs fill the air.  One of the most pleasant songs that floats across my yard is that of the Carolina Wren.  In fact, I hear Carolina wrens calling so frequently throughout a typical spring day; I have often wondered how frequently a male Carolina wren sings in a day.  If you have puzzled over this same question, here is the answer.
In one study, biologists recorded a male Carolina wren, housed in cage; sing three thousand times in a single day.