Husband nesting?

My SIL had her baby early over the weekend and she was only 5 weeks ahead of me. My husband and I were pretty ready for the baby prior to this (I'd say about 95% ready) but the minute we visited her and the baby, he's been on a "nesting" streak. He's all sorts of cleaning and organizing. The day after our niece was born, he woke me up, rushed me to get ready and did a finally baby shopping day (not something I thought we would need to do). I'm not complaining but my ex-husband NEVER did this with 3 babies. I'm amazed watching him go. Do husbands nest too?