{"id":{"repo_id":"sdstate","oai_identifier":"oai:openprairie.sdstate.edu:etd-1139"},"canonical_url":"https://search.dev.ndltd.org/etd/sdstate/oai:openprairie.sdstate.edu:etd-1139","repository":{"repo_id":"sdstate","name":"South Dakota State University","base_url":"https://openprairie.sdstate.edu/do/oai/"},"display":{"title":"Summer and Fall Ecology of Gray Patridge in Eastern South Dakota","abstract":"Gray partridge (Perdix perdix) nesting biology, summer and fall habitat utilization, home range, and food habits were studied in Brookings County, South Dakota, during 1978-79. Data were collected on a 62 km² study area 16 km northeast of Brookings. Nesting habitats, success, and clutch size were determined from 44 randomly located nests. Most nests (91%) were in grassy roadsides and fencerows. Few birds nested in cover dominated by legume vegetation. Average clutch size of completed nests was 17.8 eggs and nest success was 37%. Mammalian predation was the major cause (50%) of nesting failure. Gray partridge habitat utilization was determined usein gradio telemetry, weekly roadside surveys, and incidental observations. Twelve partridge were radio-tagged in 1979. Radio-tagged partridge primarily used small grain gields during brood rearing (22 June – 21 August). Small grain may have offered more adequate cover than other agricultural crops. During the late summer and early fall (22 August – 21 October) partridge shifted to standing row crops after harvest reduced available cover in small grains. Use of row crops declines slightly in late fall (22 October – 21 December) as radio-tagged partridge increasingly utilized pastures. Pastures may be a favored late fall habitat because they are blown free of snow and food is probably more available there than in other cover type. Fall home range of 4 radio-tagged partridge varied form 0.16-3.1 km². Crop contents from 72 and 61 birds collected in 1978-79, respectively, were examined. Insects were the predominant food during brood rearing. Consumption of cultivated grains and wild seeds increased in late summer and fall.","abstract_html":"Gray partridge (Perdix perdix) nesting biology, summer and fall habitat utilization, home range, and food habits were studied in Brookings County, South Dakota, during 1978-79. Data were collected on a 62 km² study area 16 km northeast of Brookings. Nesting habitats, success, and clutch size were determined from 44 randomly located nests. Most nests (91%) were in grassy roadsides and fencerows. Few birds nested in cover dominated by legume vegetation. Average clutch size of completed nests was 17.8 eggs and nest success was 37%. Mammalian predation was the major cause (50%) of nesting failure. Gray partridge habitat utilization was determined usein gradio telemetry, weekly roadside surveys, and incidental observations. Twelve partridge were radio-tagged in 1979. Radio-tagged partridge primarily used small grain gields during brood rearing (22 June – 21 August). Small grain may have offered more adequate cover than other agricultural crops. During the late summer and early fall (22 August – 21 October) partridge shifted to standing row crops after harvest reduced available cover in small grains. Use of row crops declines slightly in late fall (22 October – 21 December) as radio-tagged partridge increasingly utilized pastures. Pastures may be a favored late fall habitat because they are blown free of snow and food is probably more available there than in other cover type. Fall home range of 4 radio-tagged partridge varied form 0.16-3.1 km². Crop contents from 72 and 61 birds collected in 1978-79, respectively, were examined. Insects were the predominant food during brood rearing. Consumption of cultivated grains and wild seeds increased in late summer and fall.","abstract_has_math":false,"creators":["Hupp, Jerry W."],"institution":null,"degree_name":"Master of Science (MS)","degree_level":"Thesis - Open Access","degree_discipline":"Wildlife and Fisheries Science","degree_department":null,"school":null,"contributors":["John T. Ratti","Charles G. Scalet"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1980,"date_issued":"1980-01-01T08:00:00Z","date_published":"1980-01-01T08:00:00Z","updated_at":"2026-07-24T04:27:36Z","subjects":["Natural Resources and Conservation"],"languages":["en"],"rights":["<p>No Copyright - Non-Commercial Use Only<br /><a href=\"http://rightsstatements.org/vocab/InC-EDU/1.0/\">http://rightsstatements.org/vocab/NoC-NC/1.0/</a></p>"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://openprairie.sdstate.edu/etd/139","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["John T. Ratti","Charles G. 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Data were collected on a 62 km² study area 16 km northeast of Brookings. Nesting habitats, success, and clutch size were determined from 44 randomly located nests. Most nests (91%) were in grassy roadsides and fencerows. Few birds nested in cover dominated by legume vegetation. Average clutch size of completed nests was 17.8 eggs and nest success was 37%. Mammalian predation was the major cause (50%) of nesting failure. Gray partridge habitat utilization was determined usein gradio telemetry, weekly roadside surveys, and incidental observations. Twelve partridge were radio-tagged in 1979. Radio-tagged partridge primarily used small grain gields during brood rearing (22 June – 21 August). Small grain may have offered more adequate cover than other agricultural crops. During the late summer and early fall (22 August – 21 October) partridge shifted to standing row crops after harvest reduced available cover in small grains. Use of row crops declines slightly in late fall (22 October – 21 December) as radio-tagged partridge increasingly utilized pastures. Pastures may be a favored late fall habitat because they are blown free of snow and food is probably more available there than in other cover type. Fall home range of 4 radio-tagged partridge varied form 0.16-3.1 km². Crop contents from 72 and 61 birds collected in 1978-79, respectively, were examined. Insects were the predominant food during brood rearing. Consumption of cultivated grains and wild seeds increased in late summer and fall."]},{"key":"dc:title","label":"Title","values":["Summer and Fall Ecology of Gray Patridge in Eastern South Dakota"]}]}],"canonical_facts":{"dc:contributor":["John T. Ratti","Charles G. Scalet"],"dc:creator":["Hupp, Jerry W."],"dc:description.abstract":["Gray partridge (Perdix perdix) nesting biology, summer and fall habitat utilization, home range, and food habits were studied in Brookings County, South Dakota, during 1978-79. Data were collected on a 62 km² study area 16 km northeast of Brookings. Nesting habitats, success, and clutch size were determined from 44 randomly located nests. Most nests (91%) were in grassy roadsides and fencerows. Few birds nested in cover dominated by legume vegetation. Average clutch size of completed nests was 17.8 eggs and nest success was 37%. Mammalian predation was the major cause (50%) of nesting failure. Gray partridge habitat utilization was determined usein gradio telemetry, weekly roadside surveys, and incidental observations. Twelve partridge were radio-tagged in 1979. Radio-tagged partridge primarily used small grain gields during brood rearing (22 June – 21 August). Small grain may have offered more adequate cover than other agricultural crops. During the late summer and early fall (22 August – 21 October) partridge shifted to standing row crops after harvest reduced available cover in small grains. Use of row crops declines slightly in late fall (22 October – 21 December) as radio-tagged partridge increasingly utilized pastures. Pastures may be a favored late fall habitat because they are blown free of snow and food is probably more available there than in other cover type. Fall home range of 4 radio-tagged partridge varied form 0.16-3.1 km². Crop contents from 72 and 61 birds collected in 1978-79, respectively, were examined. Insects were the predominant food during brood rearing. Consumption of cultivated grains and wild seeds increased in late summer and fall."],"dc:identifier":["https://openprairie.sdstate.edu/etd/139"],"dc:language":["en"],"dc:rights":["<p>No Copyright - Non-Commercial Use Only<br /><a href=\"http://rightsstatements.org/vocab/InC-EDU/1.0/\">http://rightsstatements.org/vocab/NoC-NC/1.0/</a></p>"],"dc:subject":["Natural Resources and Conservation"],"dc:title":["Summer and Fall Ecology of Gray Patridge in Eastern South Dakota"],"thesis:degree_discipline":["Wildlife and Fisheries Science"],"thesis:degree_level":["Thesis - Open Access"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T04:27:36Z"}