It appears as though the Cranes were moving about the LDV as they were seen at Wheldrake Ings (before been flushed), they were later seen down at North Duffield Carrs before flying back north. Russell managed to get a picture of the birds as they flew north (below).
Common Crane © Russell Slack 2011
Its worth noting if people are going to Wheldrake (and other areas in the LDV) please stay on the path . This is a really obvious big thing that people walk on. As a hint, it follows the river around to Tower Hide and beyond DO NOT WALK OUT ONTO THE MEADOWS.