Fig. 4 A flock of Linnets (Carduelis cannabina) and at least one Goldfinch (Carduelis carduelis)
in flight near West Angle, Pembrokeshire, UK. An automatic count of this image generated a total
of 377 birds while a manual count, carried out for validation, gave a total of 458 birds. Camera
model – Canon EOS 7D, Lens – Canon 35 mm, ISO – 400, F-stop – f/8, Exposure time – 1/500 s
Fig. 5 A flock of Golden Plovers in flight near Castlemartin, Pembrokeshire, UK. An automatic
count of this image carried out in ImageJ generated a total of 832 birds, while a validation exercise,
based the on the number of pixels allocated to each individual in the Excel file, generated a total of
848 birds. A manual count generated a total of 842 birds. Camera model – Canon EOS 7D, Lens –
Tamron 150–600 mm, Focal length – 150 mm, ISO – 200, F-stop – f/5.6, Exposure time – 1/250 s
in flight near West Angle, Pembrokeshire, UK. An automatic count of this image generated a total
of 377 birds while a manual count, carried out for validation, gave a total of 458 birds. Camera
model – Canon EOS 7D, Lens – Canon 35 mm, ISO – 400, F-stop – f/8, Exposure time – 1/500 s
Fig. 5 A flock of Golden Plovers in flight near Castlemartin, Pembrokeshire, UK. An automatic
count of this image carried out in ImageJ generated a total of 832 birds, while a validation exercise,
based the on the number of pixels allocated to each individual in the Excel file, generated a total of
848 birds. A manual count generated a total of 842 birds. Camera model – Canon EOS 7D, Lens –
Tamron 150–600 mm, Focal length – 150 mm, ISO – 200, F-stop – f/5.6, Exposure time – 1/250 s