Sergey Dereliev

Largest of the two yellow-billed swans, breeding along pools, lakes, rivers, and in marshes and bogs in the taiga and birch forest zones of northern Europe and Asia. Most breed in Russian Federation. European population is estimated at 25,300-32,800 pairs. Recently expanded its breeding range into Baltic states, Poland, Denmark, Germany and the Netherlands. Migratory, with central European birds moving only short distances. Diet consists of aquatic plants, grasses, sedges and horsetails. During winter also on agricultural fields and pastures. Threatened by habitat degradation in eastern part of range, trend unknown.

Season of assessment

B

Population trendIncreasing
Population size
(min-max, best estimate)		66800-102000,82000
Red List categoryLC
Franks, S., Fiedler, W., Arizaga, J., Jiguet, F., Nikolov, B., van der Jeugd, Ambrosini, R, Aizpurua, O., Bairlein, F., Clark, J., Fattorini, N, Hammond, M., Higgins, D, Levering, H., Skellorn, W., Spina, F, Thorup, K. Walker, J., Woodward, I. and Baillie, S.R. (1) (2022) Online Atlas of the movements of European bird populations. https://migrationatlas.org EURING/CMS (1) Principal investigator
Carte

Connectivité globale pour Cygne chanteur

Very clear pattern with strong connections between breeding and wintering sites of different populations. Birds breeding Iceland strongly connected to wintering sites in Ireland, Scotland and Northern England, very few connections to European mainland. Birds breeding western Finland and Sweden connected to wintering sites in low countries, few Norfolk and along Elbe in Germany. Birds breeding in Baltic and southern Finland connected to wintering sites in Eastern Germany with clear concentrations along rivers Elbe and Oder. Polish breeding sites connect mainly to Elbe river in winter, also wintering closer-by in western Poland and at Bodensee on German-Swiss border and in Hungary.

Contrôles par Condition for Cygne chanteur

Most encounters after 1995, and during winter months. Juveniles ringed between mid-July and begin September. Shot birds rare, mainly Iceland, UK and Russia. Many reports of dead birds in same areas and Finland. Most reencounters are of birds of which rings or colourmarks were read in the field.

Annual Movements for Cygne chanteur

Largely stable in December-February, with most re-encounters in UK and Ireland, low countries, Denmark, W Sweden, Germany and Poland. First birds arrive Sweden and Finland in March, northern Finland begin April. Low countries and UK and Ireland vacated by April, breeding birds arrive on Iceland. Wintering areas along Elbe and Oder vacated by mid-April, by mid-May all birds in breeding areas in Poland, Baltic, Finland and Iceland. Few encounters northern Russia in June and July. No change until end September, when first Icelandic birds start moving south. Birds arrive Western Germany begin October; end October first birds appear Denmark and low countries. Inland sites in Finland vacated end October, but quite many birds remain in SW Finland until end November. Birds appear Bodensee from November.

Connectivité par mois par région pour Cygne chanteur

Birds breeding Iceland connected to UK and Ireland in November-February. First arrive Iceland in April, last sightings in Oct on south coast. Birds wintering Norfolk mainly connect to Fennoscandia and exchange with wintering sites in low countries, some also Iceland. Birds in Polish breeding sites in May – Sept mainly found along Oder and especially Elbe in Nov – March, fewer remain on ponds in SW and W Poland. Connections to low countries very rare. Birds breeding Baltic and S. Finland Apr-Aug all found along Oder and Elbe in Nov-March with very few moving further West. Birds breeding Sweden and W Finland Apr-Aug found in Denmark and low countries in Nov-Feb. No clear staging areas visible. Connections to breeding areas further East in Russia rare, mainly from birds wintering C. Europe.

Références

Statistiques Carte
Nombre de données Nombre d'individus Nombre de contrôles
Données cartographiées*
Données totales disponibles
*Données cartographiées avec des contrôles >= à 50 km