{"title":"Trace elements in seabirds from the Barents and Norwegian Seas, 1991-1993","authors":"V. Savinov, G. Gabrielsen, T. Savinova","doi":"10.2307/1522056","DOIUrl":"https://doi.org/10.2307/1522056","url":null,"abstract":"","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"508 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123199473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-Radio transmitters have potential for measuring rates and causes of mortality in precocial chicks. To assess their utility, elastic harnesses were used to attach radio transmitters to 49 newly hatched Banded Dotterel (Charadrius bicinctus) chicks, a bird breeding along braided rivers of the South Island, New Zealand. Twelve chicks either lost their transmitters or the transmitters were removed, six chicks survived to fledging, 26 chicks died and the outcome was unclear for the remaining five chicks. A minimum of 18% of chicks that died were taken by predators, but predator identity was clear in only one case. The transmitters did not appear to affect growth rates of radiomarked chicks, but three chicks died from harness entanglement. This technique provided only limited information about causes of mortality in Banded Dotterel chicks, and radio transmitters attached with elastic harnesses are not suitable for young chicks. Received 2 March 2001, accepted 20 April 2001.
{"title":"Evaluation of Radio Transmitters for Measuring Chick Mortality in the Banded Dotterel","authors":"R. Keedwell","doi":"10.2307/1522033","DOIUrl":"https://doi.org/10.2307/1522033","url":null,"abstract":"-Radio transmitters have potential for measuring rates and causes of mortality in precocial chicks. To assess their utility, elastic harnesses were used to attach radio transmitters to 49 newly hatched Banded Dotterel (Charadrius bicinctus) chicks, a bird breeding along braided rivers of the South Island, New Zealand. Twelve chicks either lost their transmitters or the transmitters were removed, six chicks survived to fledging, 26 chicks died and the outcome was unclear for the remaining five chicks. A minimum of 18% of chicks that died were taken by predators, but predator identity was clear in only one case. The transmitters did not appear to affect growth rates of radiomarked chicks, but three chicks died from harness entanglement. This technique provided only limited information about causes of mortality in Banded Dotterel chicks, and radio transmitters attached with elastic harnesses are not suitable for young chicks. Received 2 March 2001, accepted 20 April 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122931039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-During the non-breeding season, many shorebirds use coastal habitats where tides influence their dispersion patterns and social systems. We spot-mapped Long-billed Curlews (Numenius americanus) at the Elk River estuary, California to examine variation in territory occupancy from May 1999-April 2000. Curlew abundance was highest (a maximum of 16 territorial and up to 10 non-territorial birds) from July to September, after which time numbers declined progressively to 2-6 in winter. Five curlews were resident on >50% of observation days (N = 133) from June-April; these individuals returned to the estuary earlier and departed later than 11 other territorial curlews that were present 12-37% of occasions and mostly from July-November. Territory occupancy declined in association with precipitation and diurnal low tides ranging between -0.7 and 1.3 m. The absence of two territorial curlews coincided with rainy periods. The absence of curlews from five territories coincided with neap (low) tides; four of these curlews held territories at lower intertidal elevations with gently sloping topographies, such that they were inundated longer than other territories. At the Elk River estuary, territoriality may limit the number of curlews using intertidal habitats, but individual variation in territory residency suggests that numbers, and possibly carrying capacity, changed seasonally with availability of food in intertidal and pasture habitats. Habitat losses, such as those accompanying moderate (25-50 cm) rises in sea level associated with global warming, may reduce the carrying capacity of estuaries where existing levees preclude creation of new intertidal habitat. Received 31 October 2000, accepted 16January 2001.
{"title":"Seasonal Variation in Territory Occupancy of Non-Breeding Long-Billed Curlews in Intertidal Habitats","authors":"M. Colwell, R. L. Mathis","doi":"10.2307/1522032","DOIUrl":"https://doi.org/10.2307/1522032","url":null,"abstract":"-During the non-breeding season, many shorebirds use coastal habitats where tides influence their dispersion patterns and social systems. We spot-mapped Long-billed Curlews (Numenius americanus) at the Elk River estuary, California to examine variation in territory occupancy from May 1999-April 2000. Curlew abundance was highest (a maximum of 16 territorial and up to 10 non-territorial birds) from July to September, after which time numbers declined progressively to 2-6 in winter. Five curlews were resident on >50% of observation days (N = 133) from June-April; these individuals returned to the estuary earlier and departed later than 11 other territorial curlews that were present 12-37% of occasions and mostly from July-November. Territory occupancy declined in association with precipitation and diurnal low tides ranging between -0.7 and 1.3 m. The absence of two territorial curlews coincided with rainy periods. The absence of curlews from five territories coincided with neap (low) tides; four of these curlews held territories at lower intertidal elevations with gently sloping topographies, such that they were inundated longer than other territories. At the Elk River estuary, territoriality may limit the number of curlews using intertidal habitats, but individual variation in territory residency suggests that numbers, and possibly carrying capacity, changed seasonally with availability of food in intertidal and pasture habitats. Habitat losses, such as those accompanying moderate (25-50 cm) rises in sea level associated with global warming, may reduce the carrying capacity of estuaries where existing levees preclude creation of new intertidal habitat. Received 31 October 2000, accepted 16January 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126667297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. S. D. S. Fonseca, M. Petry, Alexandre Henrique Jost
-During 13 visits to the State of Rio Grande do Sul, Brazil outside of the breeding season, stomachs were collected from 144 dead and randomly selected first-year Magellanic Penguins Spheniscus magellanicus and their contents analyzed. Cephalopods were an important item in the diet and were found in 76% of the stomachs, averaging five cephalopod beaks per stomach. The following cephalopods were identified from the remains: Illex argentinus, Histioteuthis sp., Loligo sp., L. sanpaulensis, L. plei, Argonauta nodosa and one specimen of family Cranchiidae. Smaller numbers of fish and fish otoliths (less than one per stomach); a few Hydrozoa, Isopoda and Salpa sp. were also found. Parasitic Nematoda were recorded in 80% of the stomachs. Many of the cephalopods were small and were probably planktonic. Maximum size of prey were larger than those reported from the breeding season. Received 1 October 2000, accepted 16January 2001.
-在繁殖季节之外对巴西南里奥格兰德州进行了13次访问，收集了144只死亡和随机选择的一年级麦哲伦企鹅Spheniscus magellanicus的胃，并对其内容进行了分析。头足类动物是饮食中的重要食物，76%的胃中都有头足类动物的喙，平均每个胃有5个头足类动物的喙。从遗骸中鉴定出以下头足类动物:阿根廷Illex argentinus, Histioteuthis sp.， Loligo sp.， L. sanpaulensis, L. plei, Argonauta nodosa和一个Cranchiidae科标本。鱼和鱼耳石数量较少(每个胃少于一个);少量水螅类、等足类和水螅类也有发现。80%的胃内有寄生线虫。许多头足类动物很小，可能是浮游生物。猎物的最大尺寸比在繁殖季节报道的要大。2000年10月1日收，2001年1月16日收。
{"title":"Diet of the Magellanic Penguin on the Coast of Rio Grande do Sul, Brazil","authors":"V. S. D. S. Fonseca, M. Petry, Alexandre Henrique Jost","doi":"10.2307/1522046","DOIUrl":"https://doi.org/10.2307/1522046","url":null,"abstract":"-During 13 visits to the State of Rio Grande do Sul, Brazil outside of the breeding season, stomachs were collected from 144 dead and randomly selected first-year Magellanic Penguins Spheniscus magellanicus and their contents analyzed. Cephalopods were an important item in the diet and were found in 76% of the stomachs, averaging five cephalopod beaks per stomach. The following cephalopods were identified from the remains: Illex argentinus, Histioteuthis sp., Loligo sp., L. sanpaulensis, L. plei, Argonauta nodosa and one specimen of family Cranchiidae. Smaller numbers of fish and fish otoliths (less than one per stomach); a few Hydrozoa, Isopoda and Salpa sp. were also found. Parasitic Nematoda were recorded in 80% of the stomachs. Many of the cephalopods were small and were probably planktonic. Maximum size of prey were larger than those reported from the breeding season. Received 1 October 2000, accepted 16January 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124973844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-Heermann's Gulls (Larus heermanni) have been reported to nest on 19 islands in Mexico, but during 1999-2000 they bred on only twelve. Of the known active colonies, one, Isla Rasa, harbors over 95% of the breeding numbers, with between 300,000-400,000 adults. Three islands each support between 2,000 and 20,000 adults, and the rest from 4 to 2,000 adults. The colonies of this species have exhibited major variations through time, but data are inadequate to judge whether human activities or changes in oceanographic conditions were the cause of these variations. These two, along with size and distribution of nesting colonies, should be monitored, if the species' population dynamics are to be understood. Received 21 August 2000, accepted 19 September 2000.
{"title":"History and Status of Colonies of Heermann's Gull in Mexico","authors":"E. Mellink","doi":"10.2307/1522029","DOIUrl":"https://doi.org/10.2307/1522029","url":null,"abstract":"-Heermann's Gulls (Larus heermanni) have been reported to nest on 19 islands in Mexico, but during 1999-2000 they bred on only twelve. Of the known active colonies, one, Isla Rasa, harbors over 95% of the breeding numbers, with between 300,000-400,000 adults. Three islands each support between 2,000 and 20,000 adults, and the rest from 4 to 2,000 adults. The colonies of this species have exhibited major variations through time, but data are inadequate to judge whether human activities or changes in oceanographic conditions were the cause of these variations. These two, along with size and distribution of nesting colonies, should be monitored, if the species' population dynamics are to be understood. Received 21 August 2000, accepted 19 September 2000.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"34 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116482511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-We compared reproductive success and territory fidelity in Black Oystercatchers (Haematopus bachmani) in the Strait of Georgia, British Columbia. Twenty-four of 34 nesting pairs hatched eggs in at least one year of the study, and of which 16 pairs raised chicks that fledged. Mean fledging production for 34 pairs in 1996 and 1997 was 0.44 fledglings per breeding pair per year. Thirty of the 34 pairs observed used the same territory in 1996 and 1997. Of the 30 pairs that occupied the same territory in both years, 16 pairs failed to raise chicks in both years, seven pairs fledged chicks in one year and seven pairs fledged chicks in both years. Oystercatchers showed stronger site fidelity to territories where chicks were fledged than territories where they failed to raise young. Received 23 October 2000, accepted 23 February 2001.
{"title":"Site Fidelity and Reproductive Success of Black Oystercatchers in British Columbia","authors":"S. Hazlitt, R. Butler","doi":"10.2307/1522031","DOIUrl":"https://doi.org/10.2307/1522031","url":null,"abstract":"-We compared reproductive success and territory fidelity in Black Oystercatchers (Haematopus bachmani) in the Strait of Georgia, British Columbia. Twenty-four of 34 nesting pairs hatched eggs in at least one year of the study, and of which 16 pairs raised chicks that fledged. Mean fledging production for 34 pairs in 1996 and 1997 was 0.44 fledglings per breeding pair per year. Thirty of the 34 pairs observed used the same territory in 1996 and 1997. Of the 30 pairs that occupied the same territory in both years, 16 pairs failed to raise chicks in both years, seven pairs fledged chicks in one year and seven pairs fledged chicks in both years. Oystercatchers showed stronger site fidelity to territories where chicks were fledged than territories where they failed to raise young. Received 23 October 2000, accepted 23 February 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117018904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Bryan, C. Jagoe, H. Brant, J. Gariboldi, G. Masson
-Mercury concentrations were measured in blood, down and feather samples collected from 20 postfledging Wood Storks (Mycteria americana) captured in the coastal zone of Georgia to establish a reference level for free-ranging storks utilizing this region and assess if mercury is present in potentially hazardous concentrations. Blood concentrations ranged from 0.04-1.57 gg Hg/g (wet weight) and down and feather concentrations ranged from 1.23-18.05 gg Hg/g (dry weight). Comparisons of observed concentrations with published levels of concern suggest that some free-ranging storks may be at risk of sublethal effects due to mercury contamination. Observed concentrations are generally higher than those reported for Wood Stork nestlings in this region from the same time period, possibly resulting from differences in diet and patterns of down/feather growth and molt. Received 21 March 2001, accepted 5 May 2001.
{"title":"Mercury Concentrations in Post-Fledging Wood Storks","authors":"A. Bryan, C. Jagoe, H. Brant, J. Gariboldi, G. Masson","doi":"10.2307/1522042","DOIUrl":"https://doi.org/10.2307/1522042","url":null,"abstract":"-Mercury concentrations were measured in blood, down and feather samples collected from 20 postfledging Wood Storks (Mycteria americana) captured in the coastal zone of Georgia to establish a reference level for free-ranging storks utilizing this region and assess if mercury is present in potentially hazardous concentrations. Blood concentrations ranged from 0.04-1.57 gg Hg/g (wet weight) and down and feather concentrations ranged from 1.23-18.05 gg Hg/g (dry weight). Comparisons of observed concentrations with published levels of concern suggest that some free-ranging storks may be at risk of sublethal effects due to mercury contamination. Observed concentrations are generally higher than those reported for Wood Stork nestlings in this region from the same time period, possibly resulting from differences in diet and patterns of down/feather growth and molt. Received 21 March 2001, accepted 5 May 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126345593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-The Eared (Black-necked) Grebe (Podiceps nigricollis) is the most numerous grebe species in the world. Its status is largely a consequence of its abundance in North America where, unique among North American grebes, it is able to exploit the superabundant food resources of hypersaline lakes in the Great Basin. This results in high survivorship ofjuveniles during the critical first months of independence and of adults through the extended autumn staging period, and ultimately to increased population size. Because the major hypersaline lakes in North America are of post-Pleistocene origin, the Eared Grebe's current preeminence has likely been achieved only in the past several thousand years. Received 20 December 2000, accepted 22 February 2001.
{"title":"The Abundance of the Eared (Black-Necked) Grebe As a Recent Phenomenon","authors":"J. Jehl","doi":"10.2307/1522037","DOIUrl":"https://doi.org/10.2307/1522037","url":null,"abstract":"-The Eared (Black-necked) Grebe (Podiceps nigricollis) is the most numerous grebe species in the world. Its status is largely a consequence of its abundance in North America where, unique among North American grebes, it is able to exploit the superabundant food resources of hypersaline lakes in the Great Basin. This results in high survivorship ofjuveniles during the critical first months of independence and of adults through the extended autumn staging period, and ultimately to increased population size. Because the major hypersaline lakes in North America are of post-Pleistocene origin, the Eared Grebe's current preeminence has likely been achieved only in the past several thousand years. Received 20 December 2000, accepted 22 February 2001.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123242626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Biology and Conservation of the Birds of Kamchatka, Volumes 1 and 2","authors":"D. Nettleship, N. D. Poyarkov","doi":"10.2307/1522055","DOIUrl":"https://doi.org/10.2307/1522055","url":null,"abstract":"","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131244127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
-We studied kleptoparasitic behavior of Kelp Gulls (Larus dominicanus) feeding on fishery waste at trawl vessels in northern Patagonia, Argentina, by experimentally discarding fish. Intraspecific kleptoparasitism by gulls of all age-classes was recorded at all hauls. During experimental discarding, Kelp Gulls attempted to steal fish from other gulls in 23.5% of 1,915 cases. The length of fish handled differed between age-classes, tending to be larger in younger age classes. The size of fish being carried by victims of kleptoparasitic attempts was similar between age-classes. On the other hand, adult and sub-adult were more frequently attacked when they carried larger fish, while juveniles were victims of kleptoparasitic attempts independent of the size of the fish carried by them. The lengths of successfully stolen fish were similar between victims of different age-classes. Adult and sub-adult were successfully robbed when they carried larger fish, while juveniles were successfully robbed irrespective of the size of the fish carried by them. Gulls of different age-classes were victims of kleptoparasitic attempts, in direct proportion to the number of fish handled by each age-classes. However, juveniles were successfully robbed more often than other age-classes. Juveniles lost prey in 83% of kleptoparasitic attempts, while sub-adults and adults lost their fish in 41 % and 42% of cases, respectively. Although selection of juvenile hosts to attack could be more profitable, attack rate on young birds was not higher than expected, suggesting attacks at trawlers were at random. Feeding where there is a high density of potential victims may be advantageous forjuveniles compared to feeding elsewhere because they are not selectively harassed or displaced by older, foraging gulls. If so, this could contribute to juvenile survival which could contribute to an increased population size. Received 8 March 2000, accepted 8 May 2000.
{"title":"Intraspecific Host Selection by Kleptoparasitic Kelp Gulls in Patagonia","authors":"M. Bertellotti, P. Yorio","doi":"10.2307/1522028","DOIUrl":"https://doi.org/10.2307/1522028","url":null,"abstract":"-We studied kleptoparasitic behavior of Kelp Gulls (Larus dominicanus) feeding on fishery waste at trawl vessels in northern Patagonia, Argentina, by experimentally discarding fish. Intraspecific kleptoparasitism by gulls of all age-classes was recorded at all hauls. During experimental discarding, Kelp Gulls attempted to steal fish from other gulls in 23.5% of 1,915 cases. The length of fish handled differed between age-classes, tending to be larger in younger age classes. The size of fish being carried by victims of kleptoparasitic attempts was similar between age-classes. On the other hand, adult and sub-adult were more frequently attacked when they carried larger fish, while juveniles were victims of kleptoparasitic attempts independent of the size of the fish carried by them. The lengths of successfully stolen fish were similar between victims of different age-classes. Adult and sub-adult were successfully robbed when they carried larger fish, while juveniles were successfully robbed irrespective of the size of the fish carried by them. Gulls of different age-classes were victims of kleptoparasitic attempts, in direct proportion to the number of fish handled by each age-classes. However, juveniles were successfully robbed more often than other age-classes. Juveniles lost prey in 83% of kleptoparasitic attempts, while sub-adults and adults lost their fish in 41 % and 42% of cases, respectively. Although selection of juvenile hosts to attack could be more profitable, attack rate on young birds was not higher than expected, suggesting attacks at trawlers were at random. Feeding where there is a high density of potential victims may be advantageous forjuveniles compared to feeding elsewhere because they are not selectively harassed or displaced by older, foraging gulls. If so, this could contribute to juvenile survival which could contribute to an increased population size. Received 8 March 2000, accepted 8 May 2000.","PeriodicalId":266321,"journal":{"name":"Waterbirds: The International Journal of Waterbird Biology","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124232105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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