SEX AND AGE BIASED MOBILITY IN HAWK OWLS SURNIA-ULULA

[1] NOMADISM AND SITE-TENACITY AS ALTERNATIVE REPRODUCTIVE TACTICS IN BIRDS [J]. JOURNAL OF ANIMAL ECOLOGY, 1980, 49 (01) : 175 - 184

[2] Cramp S., 1985, BIRDS W PALEARCTIC, V4

[3] DISSING H, 1983, FUGLE, V3, P10

[4] FORSMAN D, 1980, Ornis Fennica, V57, P173

[5] Haftorn S, 1971, NORGES FUGLER

[6] Hagen Y., 1952, ROVFUGLENE VILTPLEIE

[7] HAGEN Y, 1956, STERNA, V2, P3

[8] Jacobsen O.W., 1984, Var Fuglefauna, V7, P135

[9] Jonsson A., 1983, Var Fagelvarld, V42, P475

[10] DIFFERENCES IN WINTER RANGE AMONG AGE-SEX CLASSES OF SNOWY OWLS NYCTEA-SCANDIACA IN NORTH-AMERICA [J]. ORNIS SCANDINAVICA, 1986, 17 (01): : 1 - 7

[1] NOMADISM AND SITE-TENACITY AS ALTERNATIVE REPRODUCTIVE TACTICS IN BIRDS [J]. JOURNAL OF ANIMAL ECOLOGY, 1980, 49 (01) : 175 - 184

[2] Cramp S., 1985, BIRDS W PALEARCTIC, V4

[3] DISSING H, 1983, FUGLE, V3, P10

[4] FORSMAN D, 1980, Ornis Fennica, V57, P173

[5] Haftorn S, 1971, NORGES FUGLER

[6] Hagen Y., 1952, ROVFUGLENE VILTPLEIE

[7] HAGEN Y, 1956, STERNA, V2, P3

[8] Jacobsen O.W., 1984, Var Fuglefauna, V7, P135

[9] Jonsson A., 1983, Var Fagelvarld, V42, P475

[10] DIFFERENCES IN WINTER RANGE AMONG AGE-SEX CLASSES OF SNOWY OWLS NYCTEA-SCANDIACA IN NORTH-AMERICA [J]. ORNIS SCANDINAVICA, 1986, 17 (01): : 1 - 7