Another night in the forest

Yesterday I and Gabriel spent a whole night in a god area in hope of many recoveries with geolocators. When the morning came we could sum 7 trapped nightjars and no recoveries. The males shurring a lot but they are  a bit laid back when they came near the nets.
Gabriel trapped a nightjar with a strange different feather on one wing. The feather grow up from the wings upperside.

 One of the females in my hand.

 Strange feather.