... which outlines the difficulties that many new recipients of life-science doctorates have in s... more ... which outlines the difficulties that many new recipients of life-science doctorates have in securing research positions in the traditional arenas of academia ... E-mail: (jcherrie{at}mailer.fau.edu). Elizabeth Farnsworth. Scott Franklin. Beth Hufnagel. Eric Klopfer. Janet Russell. Ben Sayler ...
ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 ... more ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 autumn migration concentrations in Glacier National Park, Montana. The nearly exclusive prey at this site was kokanee salmon (Oncorhynchus nerka). We quantified, during aerial piracy attempts, the success of aggressors (eagles that aggressively tried to pirate salmon from other eagles) and followers (eagles that remained behind the interaction and made no attempt to directly pirate food) in obtaining food dropped by the host (the eagle in possession of the fish). During these interactions (N = 62), the host frequently dropped the salmon (55%), which was often recovered (62So) by the aggressor, a follower, or an eagle perched nearby. Fifty-two percent of the piracy attempts observed had at least one follower. A host was more likely to drop the salmon as the group size (aggressor and followers) increased. On a per-individual basis, aggressors and followers were equally successful at obtaining food lost by a host. Aggressors were more successful when one follower was present (17%) than when no followers were present (10%). One aggressor to one follower was the only ratio profitable to both.
ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 ... more ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 autumn migration concentrations in Glacier National Park, Montana. The nearly exclusive prey at this site was kokanee salmon (Oncorhynchus nerka). We quantified, during aerial piracy attempts, the success of aggressors (eagles that aggressively tried to pirate salmon from other eagles) and followers (eagles that remained behind the interaction and made no attempt to directly pirate food) in obtaining food dropped by the host (the eagle in possession of the fish). During these interactions (N = 62), the host frequently dropped the salmon (55%), which was often recovered (62So) by the aggressor, a follower, or an eagle perched nearby. Fifty-two percent of the piracy attempts observed had at least one follower. A host was more likely to drop the salmon as the group size (aggressor and followers) increased. On a per-individual basis, aggressors and followers were equally successful at obtaining food lost by a host. Aggressors were more successful when one follower was present (17%) than when no followers were present (10%). One aggressor to one follower was the only ratio profitable to both.
This study evaluated the effectiveness of teacher-scientist partnerships for increasing the use o... more This study evaluated the effectiveness of teacher-scientist partnerships for increasing the use of inquiry in precollege classrooms. It assessed the influence of the Teaching About Energy Through Inquiry Institutes for middle and high school teachers and energy scientists on participants ’ attitudes about science and science education, use of inquiry instructional techniques, and student attitudes about their classroom environments. Participant surveys, institute and classroom observations, lesson plans, and interviews indicated increased appreciation for inquiry, greater confidence in teaching using inquiry, and greater use of inquiry in the classroom. Student surveys and classroom observations pointed to higher levels of student satisfaction and less friction among classmates during inquiry-based investigations implemented after the institutes. Moreover, scientist partners reported increased familiarity with principles of science education and best teaching practice, which are ess...
AgsTv,CT.-During 1985-95, we documented fledging, migration, and subsequent locations of juveni... more AgsTv,CT.-During 1985-95, we documented fledging, migration, and subsequent locations of juvenile bald eagles (Haliaeetus leucocephalus) from Glacier National Park (GNP), Montana. The median fledging date was I August (N = 29). We radiotagged 11 fledglings, nine of which also received wing markers. The median date of migration from natal areas was 13 September (N = 15). The interval between fledging and migration varied from 32 to 70 d (median = 42 d, N = 15). Juveniles appeared to migrate alone, joining other eagles at foraging sites. GNP adults remained on their nesting territories when juveniles departed. One juvenile wintered 130 km from GNP. Others migrated as fhr as 1000 km. Six migrated to southern Montana, Idaho, Wyoming, and California. Three moved west to Washington or British Columbia. Two juveniles from the 1988 Lake McDonald nest nilgrated separately to the Pacific Coast. By 1991, one Lake McDonald adult had been replaced; the juvenile produced that year migrated south to Idaho. This contrast suggests that juveniles inherited distinct migration direction "programs" from different parents. Early autumn migration departures of GNP juveniles also may be genetically determined; we found no evidence that they remained locally to feed on autumn spawning runs of kokanee salmon (Oncorhynchus netka) in GNP. At least 10 of the 11 radio-tagged juveniles survived their first winter. During spring migration, four juveniles passed through or near GNP. Nine summering sites or last known spring locations were in Alberta or British Columbia, Canada. There is no evidence to date of marked juveniles returning to breed in GNP natal areas.
... which outlines the difficulties that many new recipients of life-science doctorates have in s... more ... which outlines the difficulties that many new recipients of life-science doctorates have in securing research positions in the traditional arenas of academia ... E-mail: (jcherrie{at}mailer.fau.edu). Elizabeth Farnsworth. Scott Franklin. Beth Hufnagel. Eric Klopfer. Janet Russell. Ben Sayler ...
... which outlines the difficulties that many new recipients of life-science doctorates have in s... more ... which outlines the difficulties that many new recipients of life-science doctorates have in securing research positions in the traditional arenas of academia ... E-mail: (jcherrie{at}mailer.fau.edu). Elizabeth Farnsworth. Scott Franklin. Beth Hufnagel. Eric Klopfer. Janet Russell. Ben Sayler ...
ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 ... more ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 autumn migration concentrations in Glacier National Park, Montana. The nearly exclusive prey at this site was kokanee salmon (Oncorhynchus nerka). We quantified, during aerial piracy attempts, the success of aggressors (eagles that aggressively tried to pirate salmon from other eagles) and followers (eagles that remained behind the interaction and made no attempt to directly pirate food) in obtaining food dropped by the host (the eagle in possession of the fish). During these interactions (N = 62), the host frequently dropped the salmon (55%), which was often recovered (62So) by the aggressor, a follower, or an eagle perched nearby. Fifty-two percent of the piracy attempts observed had at least one follower. A host was more likely to drop the salmon as the group size (aggressor and followers) increased. On a per-individual basis, aggressors and followers were equally successful at obtaining food lost by a host. Aggressors were more successful when one follower was present (17%) than when no followers were present (10%). One aggressor to one follower was the only ratio profitable to both.
ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 ... more ABSTRACr-We studied piracy among bald eagles (Haliaeetus leucocephalus) during the 1984 and 1985 autumn migration concentrations in Glacier National Park, Montana. The nearly exclusive prey at this site was kokanee salmon (Oncorhynchus nerka). We quantified, during aerial piracy attempts, the success of aggressors (eagles that aggressively tried to pirate salmon from other eagles) and followers (eagles that remained behind the interaction and made no attempt to directly pirate food) in obtaining food dropped by the host (the eagle in possession of the fish). During these interactions (N = 62), the host frequently dropped the salmon (55%), which was often recovered (62So) by the aggressor, a follower, or an eagle perched nearby. Fifty-two percent of the piracy attempts observed had at least one follower. A host was more likely to drop the salmon as the group size (aggressor and followers) increased. On a per-individual basis, aggressors and followers were equally successful at obtaining food lost by a host. Aggressors were more successful when one follower was present (17%) than when no followers were present (10%). One aggressor to one follower was the only ratio profitable to both.
This study evaluated the effectiveness of teacher-scientist partnerships for increasing the use o... more This study evaluated the effectiveness of teacher-scientist partnerships for increasing the use of inquiry in precollege classrooms. It assessed the influence of the Teaching About Energy Through Inquiry Institutes for middle and high school teachers and energy scientists on participants ’ attitudes about science and science education, use of inquiry instructional techniques, and student attitudes about their classroom environments. Participant surveys, institute and classroom observations, lesson plans, and interviews indicated increased appreciation for inquiry, greater confidence in teaching using inquiry, and greater use of inquiry in the classroom. Student surveys and classroom observations pointed to higher levels of student satisfaction and less friction among classmates during inquiry-based investigations implemented after the institutes. Moreover, scientist partners reported increased familiarity with principles of science education and best teaching practice, which are ess...
AgsTv,CT.-During 1985-95, we documented fledging, migration, and subsequent locations of juveni... more AgsTv,CT.-During 1985-95, we documented fledging, migration, and subsequent locations of juvenile bald eagles (Haliaeetus leucocephalus) from Glacier National Park (GNP), Montana. The median fledging date was I August (N = 29). We radiotagged 11 fledglings, nine of which also received wing markers. The median date of migration from natal areas was 13 September (N = 15). The interval between fledging and migration varied from 32 to 70 d (median = 42 d, N = 15). Juveniles appeared to migrate alone, joining other eagles at foraging sites. GNP adults remained on their nesting territories when juveniles departed. One juvenile wintered 130 km from GNP. Others migrated as fhr as 1000 km. Six migrated to southern Montana, Idaho, Wyoming, and California. Three moved west to Washington or British Columbia. Two juveniles from the 1988 Lake McDonald nest nilgrated separately to the Pacific Coast. By 1991, one Lake McDonald adult had been replaced; the juvenile produced that year migrated south to Idaho. This contrast suggests that juveniles inherited distinct migration direction "programs" from different parents. Early autumn migration departures of GNP juveniles also may be genetically determined; we found no evidence that they remained locally to feed on autumn spawning runs of kokanee salmon (Oncorhynchus netka) in GNP. At least 10 of the 11 radio-tagged juveniles survived their first winter. During spring migration, four juveniles passed through or near GNP. Nine summering sites or last known spring locations were in Alberta or British Columbia, Canada. There is no evidence to date of marked juveniles returning to breed in GNP natal areas.
... which outlines the difficulties that many new recipients of life-science doctorates have in s... more ... which outlines the difficulties that many new recipients of life-science doctorates have in securing research positions in the traditional arenas of academia ... E-mail: (jcherrie{at}mailer.fau.edu). Elizabeth Farnsworth. Scott Franklin. Beth Hufnagel. Eric Klopfer. Janet Russell. Ben Sayler ...
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