michahellis section is still under construction.
This website will deal with the Yellow-legged Gull taxon michahellis,
which is a common migrant from July to December in NW Europe. After
extensive expansion of the breeding population during the last three
decades, it nowadays can be found breeding in Belgium, the
Netherlands and Britain in mixed couples with both Herring Gull (argenteus)
and Lesser Black-backed Gull (graellsii). There are subtle
differences between the populations from the Mediterranean, Atlantic
coast of Portugal and Morocco and from the islands in the Atlantic.
Most pronounced differences can be found in the taxon atlantis,
now regarded as full species by some authors. To read more about atlantis
Yellow-legged Gull: see this page.
pages of the monthly sections can be viewed on Birdsnaps.com: