- Some gulls, such as this Mew Gull, move their feet rapidly up and down.
- This creates an upwelling which helps bring food from the bottom to the surface where the bird can get it.
- This type of activity is very common in streams where salmon are spawning.
- By doing this the gulls bring salmon eggs laying on the substrate to the surface.
- In this case, however, this gull is standing in an intertidal area.
- This activity brings tiny Macoma clams from the bottom to the water surface where the gull can grab them.
Dancing Gull from Bob Armstrong on Vimeo.