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Bird of the week - European Shag

Toppskarv i hekkefjærdrakt.

European Shag -Phalacrocorax aristotelis-

The European Shag is the smallest of the two species of cormorants we have in Norway. In spring, it has a characteristic crest on the head and metallic green-tinged sheen on the feathers.

The European Shag is the smallest of the two cormorant species in Norway. In spring, it has a characteristic crest on the head (see picture).

You can see them at Lista sitting on the rocks along the beach or flying in big flocks on the sea when they are migrating. In spring they fly across the Lista lighthouse towards NW, having the migration peak in the end of March (see Figure 1). Shags can be distinguished here from the Cormorants because they fly in flock very low above the sea. If you see a bird from the cormorant family flying over the lighthouse or in the freshwater, it is probably a Great Cormorant and not a Shag.

Lista Bird Observatory's data shows that the number of Shags has been above average every year since 2011 and the abundance has been high in 2017. This species shows a significant increase on the long-term trends at Lista, both spring and autumn.

This species is one of the seabirds that has managed well along the coast at Lista, and in recent years it has established a relatively large colony on Rauna.

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.

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

Reportasje fra Lista FS
i Aftenposten

Seasonal deviation
Spotted Nutcracker4-98%
Sedge Warbler19-95%
Eurasian Bullfinch14-94%
Northern Lapwing127-94%
Common Redpoll387-91%
White-tailed Eagle32+337%
Common Buzzard285+314%
Eurasian Collared Dove100+297%
Carrion Crow55+282%
View deviation of seasons

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Siste 5 på siden
  The Scandinavian Triple
  Begynnerkurs i ringmerking: 04.-05. mai 2019
  Bird of the week - Merlin
  Bird of the week - Greylag Goose

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