My chicks shipped yesterday, I actually have a tracking number for the package, and the site says estimated delivery by 4/20. They got to El Paso TX this morning, which is about 90 miles from us. Is it possible that it would take them two more days to get to me? Or is the estimated delivery date just telling me 'at the latest'? I was hoping they'd make it in two days, but if it does take three, will they still be okay?