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Description
No less than 244 bird species have been recorded on the islands of Stockskär and Häradskär. In March the migration of kajka mořská starts. Thousands of of them can bee seen migrating past the island if the weather is okay. At the same time the first kulík písečný, husice liščí, ústřičník velký and linduška skalní can be seen in smaller numbers. You can also see smaller amounts of migrating marine ducks and loons, but only in small numbers. At this time the first auks also arrive.
In April the spring birds continue to arrive. The migration of marine ducks continues, and sometimes hundreds of polák kaholka might be seen migrating. Sometimes a couple of potápka roháč, potápka žlutorohá and potápka rudokrká can be seen resting or passing. The first terns also arrive in april.
In May large number passerine birds arrive. Hundreds of warblers can bee seen resting on the island on their way north. Some birds who are numerous during this season are rehek zahradní (as many as 50 have been seen in a day), pěnice pokřovní (as many as 750 have been seen in a day), pěnice hnědokřídlá (as many as 50 have been seen in a day), budníček větší (up to 500 have been seen in a day), pěnice černohlavá (as many as 150 have been seen in a day), budníček větší (as many as 500 have been seen in a day), budníček menší (as many as 40 have been seen in a day), budníček lesní (as many as 75 have been seen in a day). Most passerine birds are seen around the 10th of May. Along with theese birds you can find many rare ones like slavík modráček (relativley common) lejsek bělokrký (possible if the conditions are right), lejsek malý (seen almost every year) rehek domácí (seen every year), kalous pustovka (seen almost every year) kos horský (seen some years), křivka bělokřídlá (some years) strnad malinký (seen only some years). In May large amounts terns also pass the islands, sometimes in the hundreds.
After May has passed it is not until September that the islands start to become rich in birds. The migration starts with passing potápka rudokrká. A few passerine birds also rest on the island on their way south. Like cvrčilka zelená (rare). It is in the middle of September that the waterfowl starts to migrate south which continues all the way into September. Starting with marine ducks and dabbling ducks. Most common are the turpan černý (as many as 4400 have been seen migrating in a day), turpan hnědý (as many as 3400 have been seen migrating in a day), morčák prostřední (as many as 770 have been seen migrating in a day), hvízdák eurasijský (as many as 3600 have been seen migrating in a day) who can be seen in the thousands migrating. Later in the season berneška tmavá starts to migrate south often in the thousands.
In October/late September the large amounts of passerine birds return, this time with hundreds of králíček obecný (at most 600), červenka obecná (at most 300), střízlík obecný (at most 400), šoupálek dlouhoprstý (at most 120), čečetka zimní (at most 800), drozd zpěvný (at most 500). In autumn ringing is carried out at Häradsskär. Along with these birds it is not rare to find a rare warbler or pipit like budníček pruhohlavý (almost every year), budníček menší (the siberan subspecies tristis is regular at the island), budníček zlatohlavý (in total 10 of this vagrant have been seen on the island). The islands are quite attractive to many birds and the place has a quite long list of vagrants. This island also has the only 2 records of cvrčilka pruhovaná in Sweden. In no other place has this bird been seen, but here its been seen twice.
Details
Access
The boats to Häradskär start from Fyrudden harbour. Getting to Häradskär with a ferry costs from 400 SEK per person (evening trip to Häradskär with Skärgårdskompaniet, see the link below for more info). Taxi boats are more expensive, but you can choose when you want to go.
Terrain and Habitat
Forest , Scattered trees and bushes , SeaConditions
HillyCircular trail
NoIs a telescope useful?
Can be usefulGood birding season
Spring , SummerBest time to visit
Autumn migration , Autumn , Spring migration , SpringRoute
Wide pathDifficulty walking trail
Average walkAccessible by
BoatBirdwatching hide / platform
NoExtra info
The ringing of birds is carried out in autumn.