Caption
Henk-Jan Koning climbing ladder to ring birds in nest hole while his dad Fred Koning blocks the hole with a jumper to stop the birds escaping. Part of 60 year long-term study to monitor raptor nests in a 3,400 hectare area of coastal dunes. Near Amsterdam, The Netherlands. March 2016. Model released.
Availability
Only inBelgium, Canada, France, Luxembourg, Switzerland