Counting bean geese flying to roost can be a difficult process. It is helpful to know where the birds are feeding during the day so that flight lines can be identified.
Roost counts normally nowadays require 2/3 observers placed at the various roost sites that the birds use.
Counting birds flying overhead allows you to estimate each group so exact figures can rarely be counted.
Bean Geese are often thought as a quiet species but flying to roost is always a noisy affair as can be heard on the video.
