Crane in Flight design by Kunihiko Kasahara
from 'Origami Omnibus'
http://assets.wwf.org.uk/custom/stories/origamimigration/.
"Six million birds visit Doñana National Park in Spain every year. They rely on its vast wetland to survive their epic journey across Europe, but this treasured World Heritage site is at risk. By 1 December, we need to convince the Spanish government to cancel the river dredging plans that are threatening Doñana."
Here is a small selection of birds I have folded and posted previously;
