I recently built a good size brooder (in one of my barn stalls) and completed two 12x10 pasture pens a few weeks ago. My plan is to raise some Cornish Cross this spring. My question: when is the right time in Spring to receive the chicks from the hatchery? I live in northern Virginia where March's average high temp is 60 degrees and average low is 39 degrees. April's is 70 for the average high and 50 for the low. My understanding, the chicks will be in the brooder for 3-4 weeks, then to the pasture pens. Since this is my first time raising meat birds, I want to get started as soon as possible this Spring, but also don't want to get the chicks too early and have issues with cold weather. Any advice is greatly appreciated. Thank you.