INCUBATION AND REGULATION OF EGG TEMPERATURE IN THE WILLOW TIT PARUS MONTANUSHAFTORN S.1979; ORNIS SCAND.; NOR; DA. 1979; VOL. 10; NO 2; PP. 220-234; BIBL. 8 REF.Article

WEIGHT INCREASE AND FEATHER DEVELOPMENT IN THE GOLDCREST REGULUS REGULUSHAFTORN S.1978; ORNIS SCAND.; NOR; DA. 1978; VOL. 9; NO 2; PP. 117-123; BIBL. 18 REF.Article

One Norwegian territory of the Marsh Tit Parus palustris during 35 yearsHAFTORN, S.Ibis (London. 1859). 1997, Vol 139, Num 2, pp 379-381, issn 0019-1019Article

Incubating female passerines do not let the egg temperature fall below the physiological zero temperature during their absences from the nestHAFTORN, S.Ornis Scandinavica. 1988, Vol 19, Num 2, pp 97-110, issn 0030-5693Article

EGG-LAYING AND REGULATION OF EGG TEMPERATURE DURING INCUBATION IN THE GOLDCREST REGULUS REGULUS.HAFTORN S.1978; ORNIS SCAND.; NORVEGE; DA. 1978; VOL. 9; NO 1; PP. 2-21; BIBL. 13 REF.Article

INCUBATION DURING THE EGG-LAYING PERIOD IN RELATION TO CLUTCH-SIZE AND OTHER ASPECTS OF REPRODUCTION IN THE GREAT TIT PARUS MAJORHAFTORN S.1981; ORNIS SCAND.; ISSN 0030-5693; NOR; DA. 1981; VOL. 12; NO 3; PP. 169-185; BIBL. 48 REF.Article

COOPERATION BETWEEN THE MALE AND FEMALE GOLDEREST REGULUS REGULUS WHEN REARING OVERLAPPING DOUBLE BROODSHAFTORN S.1978; ORNIS SCAND.; NOR; DA. 1978; VOL. 9; NO 2; PP. 124-129; BIBL. 9 REF.Article

ENERGETICS OF INCUBATION BY THE GOLDCREST REGULUS REGULUS IN RELATION TO AMBIENT AIR TEMPERATURES AND THE GEOGRAPHICAL DISTRIBUTION OF THE SPECIES.HAFTORN S.1978; ORNIS SCAND.; NORVEGE; DA. 1978; VOL. 9; NO 1; PP. 22-30; BIBL. 21 REF.Article

VARIATION IN BODY WEIGHT, WING LENGTH AND TAIL LENGTH IN THE GREAT TIT PARUS MAJOR.HAFTORN S.1976; NORWEG. J. ZOOL.; NORWAY; DA. 1976; VOL. 24; NO 4; PP. 241-271; BIBL. 31 REF.Article

Initial winter flock formation in the Willow Tit Parus montanus. Do immigrating juveniles assess the quality of territorial adults?HAFTORN, S.Ibis (London. 1859). 1999, Vol 141, Num 1, pp 109-114, issn 0019-1019Article

Egg-laying behavior in titsHAFTORN, S.The condor (Los Angeles, CA). 1996, Vol 98, Num 4, pp 863-865, issn 0010-5422Article

Ontogeny of food storing in titmice Parus sppHAFTORN, S.Ibis (London. 1859). 1992, Vol 134, Num 1, pp 69-71, issn 0019-1019Article

NOCTURNAL HYPOTHERMIA AND METABOLISM IN THE WILLOW TIT PARUS MONTANUS AT 63^ONREINERSTEIN RE; HAFTORN S.1983; JOURNAL OF COMPARATIVE PHYSIOLOGY; ISSN 0302-9824; DEU; DA. 1983; VOL. 151; NO 2; PP. 109-118; BIBL. 25 REF.Article

Contexts and possible functions of alarm calling in the willow tit, parus montanus; the principle of 'better safe than sorry'HAFTORN, S.Behaviour. 2000, Vol 137, pp 437-449, issn 0005-7959, 4Article

Is the coal tit parus ater really the most subordinate of the Scandinavian its?HAFTORN, S.Ornis Scandinavica. 1993, Vol 24, Num 4, pp 335-338, issn 0030-5693Article

Ontogeny of the vocal repertoire in the Willow Tit Parus montanusHAFTORN, S.Ornis Scandinavica. 1993, Vol 24, Num 4, pp 267-289, issn 0030-5693Article

The diurnal body weight cycle in titmice Parus sppHAFTORN, S.Ornis Scandinavica. 1992, Vol 23, Num 4, pp 435-443, issn 0030-5693Article

Seasonal and diurnal body weight variations in titmice, based on analyses of individual birdsHAFTORN, S.The Wilson bulletin (Wilson Ornithological Society). 1989, Vol 101, Num 2, pp 217-235, issn 0043-5643Article

The effect of temperature and clutch size on the energetic cost of incubation in a free-living Blue Tit (Parus caeruleus)HAFTORN, S; REINERTSEN, R. E.The Auk. 1985, Vol 102, Num 3, pp 470-478, issn 0004-8038Article

The effect of short-time fasting on metabolism and nocturnal hypothermia in the Willow Tit Parus montanusREINERTSEN, R. E; HAFTORN, S.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology. 1984, Vol 154, Num 1, pp 23-28, issn 0174-1578Article

Geographic variation of the storing behaviour in the Coal tit Parus ater : role of winter residency and environmental conditionsBROTONS, L; HAFTORN, S.Ibis (London. 1859). 1999, Vol 141, Num 4, pp 587-595, issn 0019-1019Article

Different metabolic strategies of northern birds for nocturnal survivalREINERTSEN, R. E; HAFTORN, S.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology. 1986, Vol 156, Num 5, pp 655-663, issn 0174-1578Article

Thermoregulatory abilities in chicks of the Antarctic Petrel (Thalassoica antarctica)BECH, C; MEHLUM, F; HAFTORN, S et al.Polar biology (Print). 1991, Vol 11, Num 4, pp 233-238, issn 0722-4060Article

Thermoregulatory and behavioral responses during incubation of free-living female Pied Flycatchers Ficedula hypoleucaHAFTORN, S; EIDSMO REINERTSEN, R. E.Ornis Scandinavica. 1990, Vol 21, Num 4, pp 255-264, issn 0030-5693Article

Navigation to nest site in the snow petrel (Pagodroma nivea)HAFTORN, S; MEHLUN, F; BECH, C et al.The condor (Los Angeles, CA). 1988, Vol 90, Num 2, pp 484-486, issn 0010-5422Article