Little bustard (Tetrax tetrax) is a rare visitor in Finland which has been observed only about 20 times, and in Finnish Lapland only once. It was the first observation in Finland, in Utsjoki in 1795. A single bird was shot by local hunters.
Fieldfare (Turdus pilaris) is moderately common thrush in Finnish Lapland. In Varrio Nature Reserve the population is rather stabile, at on average 18 pairs. The autumn migration observations in Varrio refer to curious behaviour. The major migration direction is from south-east to north-west. Thus the migrating fieldfares aim first at north-western or western coast of Norway, before turning to south.
Common crane (Grus grus) occurs throughout peatlands dominated Finnish Lapland. The nesting population is estimated at 5000 pairs. In the fells and hillside dominated Varrio Nature Reserve nesting has not been observed, at least since 1967 when the research station was established.
Black guillemot (Cepphus grylle) has occurred regularly throughout Gulf of Bothnia, including the bottom of the Gulf (inside Finnish Laplands). In the 1900's the Lapland population gradually decreased from several tens into minimum of 3 pairs in 1983. Largely due to establishment of Perameri National Park the threatening extinction was avoided and the nesting population has returned in 2000's to about 10 pairs per annum.
Little auk or Dovekie (Alle alle) is observed annually as vagrant in Finland. In Finnish Lapland it had been observed about 30 times. The nearest observation to Varrio strict nature reserve is from Inari, Inarinjarvi, from 25.10.2007.