EN
In June 1989, in the Gorce Mts (southern Poland) a nest of a highly polygynous Formica polyctena Foerst. colony was excavated and all the queens found there (128) were removed. An alien conspecific colony was experimentally established nearby, containing about 50 fecund queens. The orphaned workers invaded the queenright colony and abducted a lot of queens to their own nest.