Hi BYC, wondering if I should let eggs from the mail (2-3day delivery) rest for a day before setting them under my broody? Or should I put them under her right away? Also, are fertile eggs a disease risk for my current flock? Is there anything I can do to reduce this risk? Which vaccines would you suggest for when the new chicks hatch out? Marek's? THANKS!!! Very excited to hatch my first chicks with my broody!