Contrôles par Condition for Grèbe huppé

Persecuted in Europe in 19th and early 20th century (O’Donnel & Fjeldså 1997). Currently protected species in Europe. Before 1960 about 44% of all recoveries were from birds found dead and more than a third (35%) – as a result of shooting/ hunting; the latter factor was subsequently reduced largely to just 1% for the next 30 years. Fishing nets are major cause of death – the birds get drowned when diving (Abt & Konter 2009, Keller et al. 2020).

Since 1960 more than 90% of all recoveries come from alive birds, identified by other means (not ringing).

The main part of the ringing recoveries come from birds originating in W & C Europe due to the special efforts applied in that region. A difficult species to trap, majority of birds ringed at very few locations.

Annual Movements for Grèbe huppé

In the Netherlands territorial males have been found back to their breeding grounds as early as Jan (van der Poel 1985). In UK the spring return of the birds starts from mid-Feb, while in most other parts of Europe it happens in late Mar – early Apr; in northernmost part of species’ range the breeding territories are occupied in early May. The species undergoes a flightless wing-moulting period in late summer and autumn (Aug to Oct), either staying on the breeding grounds or moving to large wetlands to form – sometimes big, concentrations; more prominent movements towards coastal areas are taking place after moult (BirdLife International 2021). The largest autumn and winter gatherings have been recorded in The Netherlands (IJsselmeer), Denmark, the lakes of Switzerland, the Baltic Sea and the Turkish coast of Black Sea (O’Donnel & Fjeldså 1997, Llimona et al. 2020).

Connectivité par mois par région pour Grèbe huppé

Those birds breeding in N & E Europe and migrating SE are encountered in SW Russia and inland Ukraine Sep-Oct, reaching the Black Sea region as early as Aug but mostly between Nov and Mar, some of them staying until May; those heading S & SW are found along the Mediterranean, the region of the Alps and W Europe Nov-Mar. UK breeders reach the local coastal areas as early as Aug, spending the winter there mostly Nov-Mar. Birds breeding in W & C Europe are encountered on their wintering grounds mostly between Nov and Mar – the Atlantic Coast, the big pre-alpine lakes and the Mediterranean.

Post-breeding dispersion of the birds breeding in S Iberian Peninsula involves movements in various directions, many of them spending the winter on local coastal areas and Morocco mostly Sep-Feb.