Even with so many cranes leaving within a short time period, they do not travel together. They leave in small groups of 2 or 3 cranes, at staggered starting times. Sometimes, two such units will join forces. The 15 whooping cranes that have started the migration are bound to encounter some spring snow storms. Fortunately, they can tolerate cold weather very well and will simply wait until the storm is over to resume their journey.
Lets hope every crane has a safe trip.
With only 183 total in the wild flock, it is very important that nearly all of them survive the migration. After the migration begins, plan to keep a close eye on the skies of the Central Plains. During the month of April, whooping crane migration updates will be posted every Thursday, so you can follow their progress closely. According to Stehn, cranes usually depart when high pressure systems brings sunshine to Texas and winds from the south or east. Thermals and strong southeast winds provide ideal migration conditions.