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Bird of the week - Marsh Harrier

Marsh Harrier -Circus aeruginosus-


The Marsh Harrier is one of the few birds of prey nesting at the flat area of Lista, more specifically in the Slevdalsvann wetland.

This species is a migratory bird that is overwintering in Africa. However, the local birds can come already in March. The males have partly a gray plumage, while females and young birds are brown.

The Marsh Harrier breeds in marshes, a habitat that has become more common due to the drainage of wetlands, which have promoted the proliferation of marshes. This has helped the species to establish here. It actually bred for the first time in Norway in Slevdalsvann (Lista) in 1975. Since then it has become more common and is nesting in more places in southern Norway.

Data from Lista Fuglestasjon since 1990:




Figure 1. Timing of migration at Lista Bird Observatory
This graph shows the timing of migration throughout the year, taken from the observations of our daily counts. The number is the total number of years for all years. Note: our counts in spring are from March 15 to June 10 and in autumn from July 15 to November 15.





Figure 2. Observations per year at Lista Bird Observatory
This graph shows the number of observations distributed by years. The yellow line is the average for all years. Note that the observations for 2018 will be completed in November.




Ringing numbers
Sorry, but we are outside of the spring and autum seasons.
Detailed log

Reportasje fra Lista FS
i Aftenposten

Seasonal deviation
Common Redpoll9-98%
Sanderling1-97%
Northern Fulmar35-97%
Twite4-96%
Black-legged Kittiwake24-93%
Mistle Thrush151+398%
European Shag4218+303%
Blackcap264+229%
Rock Dove344+191%
Rock Pipit2231+178%
View deviation of seasons
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  Begynnerkurs i ringmerking: 11.-12. august 2018
  Bird of the week - Common Swift
  Bird of the week - Common Whitethroat
  Bird of the week - Common Cuckoo
  Bird of the week - Red-throated Diver

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Lista Fuglestasjon
Fyrveien 6
NO-4563 Borhaug
post@listafuglestasjon.no Tlf: 949 86 793