River Trent downstream of Alrewas - geograph

Redshanks on the Humber Foreshore - geograph

The Severn-Trent flyway is a migratory route, or flyway, used by birds crossing

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is ...

from the

Humber estuary The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal rivers Ouse and Trent. From there to the North Sea, it forms part of the boundary between ...

to the

Severn estuary The Severn Estuary ( cy, Aber Hafren) is the estuary of the River Severn, flowing into the Bristol Channel between South West England and South Wales. Its high tidal range, approximately , means that it has been at the centre of discussions in t ...

or vice versa. It follows the

Humber The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal rivers Ouse and Trent. From there to the North Sea, it forms part of the boundary betw ...

and its tributaries the rivers Trent and

Tame Tame may refer to: *Taming, the act of training wild animals * River Tame, Greater Manchester * River Tame, West Midlands and the Tame Valley * Tame, Arauca, a Colombian town and municipality * "Tame" (song), a song by the Pixies from their 1989 ...

, then the

River Severn , name_etymology = , image = SevernFromCastleCB.JPG , image_size = 288 , image_caption = The river seen from Shrewsbury Castle , map = RiverSevernMap.jpg , map_size = 288 , map_ ...

. The last of these is not connected to the other three, and so birds must cross the gap over the

West Midlands conurbation The West Midlands conurbation is the large conurbation that includes the cities of Birmingham and Wolverhampton and the towns of Sutton Coldfield, Dudley, Walsall, West Bromwich, Solihull, Stourbridge and Halesowen in the English West ...

, around

Birmingham Birmingham ( ) is a city and metropolitan borough in the metropolitan county of West Midlands in England. It is the second-largest city in the United Kingdom with a population of 1.145 million in the city proper, 2.92 million in the We ...

. It is used by birds migrating locally, within Britain, and by those migrating to or from Northern and

Southern Europe Southern Europe is the southern region of Europe. It is also known as Mediterranean Europe, as its geography is essentially marked by the Mediterranean Sea. Definitions of Southern Europe include some or all of these countries and regions: Alba ...

Among the birds known to use the flyway are sea ducks such as

common scoter The common scoter (''Melanitta nigra'') is a large sea duck, in length, which breeds over the far north of Europe and the Palearctic east to the Olenyok River. The genus name is derived from Ancient Greek ''melas'', "black", and ''netta'', "du ...

(''Melanitta nigra'') and vagrants from North America such as

lesser scaup The lesser scaup (''Aythya affinis'') is a small North American diving duck that migrates south as far as Central America in winter. It is colloquially known as the little bluebill or broadbill because of its distinctive blue bill. The origin o ...

(''Aythya affinis''), along with European ''

Aythya ''Aythya'' is a genus of diving ducks. It has twelve described species. The name ''Aythya'' comes from the Ancient Greek word (), which may have referred to a sea-dwelling duck or an auklet. ''Aythya shihuibas'' was described from the Late M ...

'' species.

References

Sources

* * {{cite book , last1=Knox , first1=Alan , last2=Parkin , first2=David , title=The Status of Birds in Britain and Ireland , date=2009 , publisher=Helm , isbn=978-1408125007 , url=https://epdf.pub/the-status-of-birds-in-britain-and-ireland-helm-country-avifaunas.html Bird migration flyways Geography of England