But with the recent arrival of a new sibling and his world turning upside down this was too much of a shock. (thebadassbreastfeeder.com)
Often, the arrival of a new sibling will cause a child to become aggressive. (attachmentparenting.org)
The arrival of a new sibling may prompt the decision, but plan ahead: If you're expecting a second child, move your child out of her crib at least six weeks before her sibling arrives, so she's settled in her new bed before the baby takes over «her» crib. (babycenter.com)