Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls
Nests of American Bitterns (Botaurus lentiginosus), marsh hawks (Circus cyaneus), and short-eared owls (Asio flammeus) are usually found in wetland habitats. Although large marshes containing dense stands of bulrushes (Scirpus), cattails (Typha), or other wetland vegetation are favored nesting cover...
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DigitalCommons@University of Nebraska - Lincoln
1977
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ftunivnebraskali:oai:digitalcommons.unl.edu:usfwspubs-1247 2024-09-30T14:33:50+00:00 Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls Duebbert, Harold F. Lokemoen, John T. 1977-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usfwspubs/248 https://digitalcommons.unl.edu/context/usfwspubs/article/1247/viewcontent/Duebbert_and_Lokemoen_1977_The_Praire_Naturalist_Upland.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usfwspubs/248 https://digitalcommons.unl.edu/context/usfwspubs/article/1247/viewcontent/Duebbert_and_Lokemoen_1977_The_Praire_Naturalist_Upland.pdf United States Fish and Wildlife Service: Publications Aquaculture and Fisheries text 1977 ftunivnebraskali 2024-09-02T07:48:19Z Nests of American Bitterns (Botaurus lentiginosus), marsh hawks (Circus cyaneus), and short-eared owls (Asio flammeus) are usually found in wetland habitats. Although large marshes containing dense stands of bulrushes (Scirpus), cattails (Typha), or other wetland vegetation are favored nesting cover, these birds have also been reported to nest in stands of tall, dense shrubs and grasses on the upland (Bent 1961, 1963; Palmer 1962; Sealy 1967; Stewart 1975). During 1968-74, we regularly found upland nests of these three species while conducting duck nesting studies in planted fields of undisturbed grass-legume cover in the Dakotas (Duebbert and Lokemoen 1976). Our findings on nest densities, hatching success, site characteristics, clutch sizes, and other ecological factors are presented in this paper. A bib (1975) indicated that the three species discussed in the present paper, in all or a significant part of their range, currently exhibit potentially dangerous, apparently non-cyclical population declines. Our general observations in North Dakota over the past 20 years also suggest an alarming decrease in populations of these birds during the breeding season. We believe that these population declines may be correlated with the widespread destruction or degradation of essential nesting habitats as agriculture has become increasingly more intensive. Text Circus cyaneus University of Nebraska-Lincoln: DigitalCommons@UNL |
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Open Polar |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
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ftunivnebraskali |
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topic |
Aquaculture and Fisheries |
spellingShingle |
Aquaculture and Fisheries Duebbert, Harold F. Lokemoen, John T. Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
topic_facet |
Aquaculture and Fisheries |
description |
Nests of American Bitterns (Botaurus lentiginosus), marsh hawks (Circus cyaneus), and short-eared owls (Asio flammeus) are usually found in wetland habitats. Although large marshes containing dense stands of bulrushes (Scirpus), cattails (Typha), or other wetland vegetation are favored nesting cover, these birds have also been reported to nest in stands of tall, dense shrubs and grasses on the upland (Bent 1961, 1963; Palmer 1962; Sealy 1967; Stewart 1975). During 1968-74, we regularly found upland nests of these three species while conducting duck nesting studies in planted fields of undisturbed grass-legume cover in the Dakotas (Duebbert and Lokemoen 1976). Our findings on nest densities, hatching success, site characteristics, clutch sizes, and other ecological factors are presented in this paper. A bib (1975) indicated that the three species discussed in the present paper, in all or a significant part of their range, currently exhibit potentially dangerous, apparently non-cyclical population declines. Our general observations in North Dakota over the past 20 years also suggest an alarming decrease in populations of these birds during the breeding season. We believe that these population declines may be correlated with the widespread destruction or degradation of essential nesting habitats as agriculture has become increasingly more intensive. |
format |
Text |
author |
Duebbert, Harold F. Lokemoen, John T. |
author_facet |
Duebbert, Harold F. Lokemoen, John T. |
author_sort |
Duebbert, Harold F. |
title |
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
title_short |
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
title_full |
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
title_fullStr |
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
title_full_unstemmed |
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls |
title_sort |
upland nesting of american bitterns, marsh hawks, and short-eared owls |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
1977 |
url |
https://digitalcommons.unl.edu/usfwspubs/248 https://digitalcommons.unl.edu/context/usfwspubs/article/1247/viewcontent/Duebbert_and_Lokemoen_1977_The_Praire_Naturalist_Upland.pdf |
genre |
Circus cyaneus |
genre_facet |
Circus cyaneus |
op_source |
United States Fish and Wildlife Service: Publications |
op_relation |
https://digitalcommons.unl.edu/usfwspubs/248 https://digitalcommons.unl.edu/context/usfwspubs/article/1247/viewcontent/Duebbert_and_Lokemoen_1977_The_Praire_Naturalist_Upland.pdf |
_version_ |
1811637614877343744 |