I suspected this but it was interesting to have it confirmed:
While it’s been widely known that some mothers suffer from postpartum depression, a series of studies over the years have suggested that new fathers may become depressed after childbirth, too.
Now an analysis of 43 earlier studies validates the fathers’ experiences with statistics. About 10 percent of men whose partners are having babies suffer depression during the time period ranging from three months before the baby is born through the baby’s first birthday. That’s twice the usual rate of depression in men, and it’s in the same range as postpartum depression in women.
NPR has a clip and article about it.