Welcome to Birds-in-Flight, our work-in-progress resource
dedicated to audiovisual identification of birds on migration.

As professional ornithologists we find us regularly confronted
with the identification of birds in flight – mostly far away,
in high altitudes, poor light, stiff wind – providing just a few
visual key features or key parts of their vocalisations.

Beside a general interest for annual animal movements that
problem turned into a passion (conspecifics would most likely
say obsession) and we would like to share our enthusiasm
and accumulated experience with other birders.

The focus of our collection is on Western Palearctic species
plus some species with vagrancy potential for comparison.

Our knowledge is based on own field observations but in equal
parts on discussions with fellow ornithologists and birders,
literature, drawings, websites, sound recordings, photographs
of others.

We would like to thank those who have shared their
knowledge in the field and fruitful discussions:

Arnoud van den Berg, Andreas Buchheim, Thijs Fijen,
Martin Grimm, Simone Grüttner, Jens Halbauer, Michael Heiß,
Bert Jahnke, Stella Klasan, Steve Klasan, Steffen Koschkar,
Thomas Köster, Peter Nuyten, Graeme Pegram, Lukas Pelikan,
Michèle Peron, Thomas Sacher, Michael Schulz, Tom Wulf
and Matthew Young.