When my wife gives birth, I plan on taking a month, MAYBE 6 weeks off to help her out around the house, and help her to take care of the newborn. The time of year doesn't make ANY difference to me. If it's in June or December, I'm going to take the same amount of time off.
Management can like it or hate it, I'm not going to lose any sleep over that.
I'll lose sleep due to a crying child