Little brother Abel James Arnett weighed 7 pounds, 13 ounces when he was born early Friday, People.com said.
"Amy, Will, Abel and Archie are all healthy and resting comfortably," Poehler's representative told the Web site.
DISCUSS AND COMMENT ON THIS STORY Reality TV World now offers Facebook Comments on our stories. To post a comment, log into Facebook and then 'Add' your comment. To report spam or abuse, click the 'X' in the upper right corner of the comment box.