Distribution and trends
Distribution
This map is derived from the Bird Atlas of the Netherlands (Sovon 2018). For each atlas square of 5x5 km, an estimate for the number of wintering birds is given.
Population trends
seabird trend
Data derived from systematic counts of migrating individuals. For each season, the hourly average number of birds (red dots), the trend line (dark blue) and associated standard error (light blue lines) are given. Seasons run from July to June.
- vanaf 1980
- significant decrease, <5% a year (-)
- laatste 12 jaar
- no detectable trend (~)
Breeding success and survival
Not enough data.
Seasonal occurrence
seasonal pattern
Data derived from systematic counts of migrating individuals. Shown is the monthly average number of birds for for the last five seasons. For each month is indicated which part is counted flying to the left or to the right.
Occurrence description
Buiten broedtijd
IJseenden houden zich vooral op de westelijke Waddenzee en de Voordelta op, maar worden ook elders op zoute of brakke wateren gezien. Op zoete wateren zijn ze schaars, al zijn waarnemingen tot diep in het binnenland mogelijk. In Nederland verschijnen de meeste IJseenden in november en zijn ze in maart grotendeels weg. De landelijk getelde aantallen worden kleiner. Dit houdt verband met de ontwikkelingen in de Oostzee, het verreweg belangrijkste overwinteringsgebied. Sinds 1993 namen de aantallen daar met 65% af. De afname wordt onder andere veroorzaakt door verslechtering en verstoring van voedselgronden.
Birds directive
Conservation status
The Birds Directive focuses on the conservation of all naturally occurring wild bird species in Europe, including the Long-tailed Duck.
This means that EU Member States must take measures to maintain or bring the populations of these species to a level that corresponds in particular to ecological, scientific and cultural requirements.
The Birds Directive requires Member States to maintain habitats for birds of sufficient size and quality, including through the designation of Special Protection Areas for the benefit of the European Natura 2000 network. No special protection zones have been designated for the Long-tailed Duck in the Netherlands. The national population must be able to maintain itself at a favorable level.
What is the methodology to assess the conservation status of birds
non-breeding bird
The conservation status of the Long-tailed Duck as non-breeding bird in the Netherlands is unfavourable (bad).
| State of Conservation Assessment | ||||
| Distribution | Population | Habitat | Future | Final verdict |
| unknown | unfavourable (bad) | favourable | unfavourable (bad) | unfavourable (bad) |
Assigned areas
No areas assigned
Counting guidelines
No counting guidelines available.