This will be the second child for Deschanel, 38, and her husband, It's Always Sunny actor David Hornsby, 39. The couple tied the knot in September 2010, almost exactly one year before they welcomed their first son Henry.
It is unclear what impact, if any, Deschanel's pregnancy will have on the production of Bones. Producers wrote Deschanel's first pregnancy into the show.
On the Set of Once Upon a Time: Stars share their characters' ultimate happy ending: