Bird enthusiasts following the next spring and summer, the active sea cucumber to the outer islands black island in the wash cormorant colony situation.
in Particular, observe what the effect of the sea eagles is cormorants and their amount.
the sea cucumber is noticed now for the first time, that eagles is at least the pressure of the cormorant of.
Young sea eagles found the end of summer in finland, too, the scale big, the 3400 adult birds during the breeding island. Last summer in the calculation of the island was a hive of 1700.
nature photographer and biologist Timo Lumme cormorant island.Jarkko Heikkinen/YlePoikkeuksellisen a lot of cormorants on the remnants of the
Last summer, sea eagle effect increased clearly, as they hunted on the island cormorants throughout the summer. Nature photographer and biologist Timo Lily held in August on the island and found the effect with my own eyes.
When we go to the islands, we saw how the sea eagle had in both legs of its cormorant chicks, tell Lily.
We found the island a total of 177 cormorant remains. Not everyone is likely to have the sea eagle kill, but the dead number was exceptionally large.
– study of various literature and statistics, on the basis of which I noticed that the carcass was that the size of the colony for a fairly large, Lily said.
cormorant remains.Jarkko Heikkinen/YlePainetta move on to the rest
Our guess is that if the eagles return to the island next spring, it might cause the sea for the capercaillies pressure to move elsewhere.
Yes its own influence certainly is. Cormorants start nesting in preparation for April, and before nesting begins, preparation is consumed in 10-20 days. If during this time they’re disturbed, and, for example, sea eagles are on the island, it may be that cormorants took off.
Together, the tree can be dozens of cormorant nests.Terhi Varjonen/YleMerimetsokanta in decline
Last summer’s census, it was discovered that the Finnish cormorants pesintäkin decline about four percent, or about a thousand nests. The hive was 25 700.
the Finnish Environment institute (switch to another service) according to sea eagle predation has increased in the 2010’s after. It weakens the cormorant breeding returns part of a large breeding colony.
cormorant breeding population began to be close to the maximum carrying capacity and sea eagle predation reduce the range.
cormorant nest on the tree.Jarkko Heikkinen/YleMerenkurkusta north?
How permanent sea eagle impact on the sea cucumber into a large cormorant colony then, see you next spring, when they find out how to nesting starts, or whether to start at all.
it is Possible, that a similar phenomenon of transition sea cucumber still up. Currently, the northernmost great cormorant colony in North Ostrobothnia, a bit Oulu above Iissä. There was a nest last summer 40.
cormorant nests are on the island so the trees than on earth.Jarkko Heikkinen/Yle
add a topic:
Young sea eagles prey on cormorants sea cucumbers in the “Islets left 20 sea eagles”
the National cormorant strategy-makers convened in Vaasa: solutions sought, all under a suitable definition of position impossible
cormorant population decreased, the sea cucumber, but grew back at sea
cormorant population declined slightly – to the nest about 25 700
Subscribe Yle newsletters!
Get Overeating the best content straight to your inbox!
Proceed to order
