| helminths from willow grouse ( lagopus lagopus ) in two localities in north norway. | a total of 77 adult and 123 juvenile willow grouse ( lagopus lagopus ) from the island of karlsöy, and 75 adult and 63 juvenile willow grouse from sennaland on the mainland of north norway were examined for helminths. raillietina urogalli and hymenolepis microps , and ascaridia compar and syngamus trachea were found. all four species occurred regularly in grouse from karlsöy between april and september-october, but only h. microps was frequently found in birds from sennaland. s. trachea only par ... | 1977 | 24228962 |