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<正>笔者于2012年5月5日11∶48,在黑龙江省大庆市龙凤湿地自然保护区(51°23'28.2″N,122°03'32.9″E)拍摄到1只长嘴半蹼鹬Limnodromus scolopaceus,经查阅《黑龙江省鸟类志》《东北鸟类》《东北鸟类图鉴》《中国鸟类区系纲要》《吉林省野生动物图鉴(鸟类)》《辽宁省动物志(鸟类)》《中国鸟类分布与分布名录(第2版)》等文献资料后认定,长嘴半蹼鹬为东北地区的鸟类新纪录。拍摄时该鸟正在觅食。该鸟体长约30 cm。嘴长而直,约9 cm,黑色,嘴基部较前端颜色略淡一些。具白色眼圈、黑棕色贯眼纹。背部呈黑、褐色 相似文献
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正2017年5月18日中午12时,在山东省滨州贝壳堤岛与湿地国家级自然保护区大口河监管站外围滨海湿地(117°52'5″E,38°15'52″N)观测到勺嘴鹬Calidris pygmaea1只。勺嘴鹬隶属于鸻形目Charadriiformes鹬科Scolopacidae滨鹬属Calidris(GibsonAllan,2012;郑光美,2017),被列为世界自然保护联盟(IUCN)红色名录极危(CR)物种(BirdL ife International,2018; IUCN,2018)。该鸟种发现之处为保护区内退潮后的淤泥质滩涂,贝类等底栖生物资源丰 相似文献
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2018年12月31日,于陕西省渭南市大荔县黄河湿地观鸟时,在一鱼塘(110°12’15. 69″E,34°56’43. 99″N,海拔339 m)内观察到1只鸻鹬(图1)在泥滩上与鹤鹬Tringa erythropus、反嘴鹬Recurvirostra avosetta和绿翅鸭Anas crecca等水鸟一同觅食。使用单反相机(NIKON D810与SIGMA S150-600变焦镜头)拍照,观察到其嘴黑褐色,长且直,基部偏黄绿色,虹膜褐色,全身呈灰色,具淡色的眉纹和深色的贯眼纹,背、肩和两翼覆羽具深色羽轴,尾及尾下覆羽具黑色横斑,腹部白色,脚黄绿色。 相似文献
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正2015年11月22日,在湖北省武汉市东西湖区府河柏泉段(30°45′10″N,114°9′15″E)观察并拍摄到小美洲黑雁(Branta hutchinsii)1只(图1),隶属于雁形目鸭科黑雁属。该雁所发现之处,为长江一级支流——府河流经武汉柏泉的河段,该河段夏季被高水位所淹,冬季水位降低后,露出草滩,河道则因人为挖筑的堤岸而形成一个面积数百亩的开阔水面,中间有若干泥土堆积而成的小岛。同域分布有豆雁(Anser fabalis)、灰雁(A.anser)、绿头 相似文献
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W. R. SIEGFRIED 《Ostrich》2013,84(3):193-197
The Red-billed Quelea Quelea quelea has been steadily expanding its range into the Western Cape province. The earliest record is of a vagrant in 1946. The next record came from 1986 in the Karoo and since 1997 there have been annual reports of the species in the province. It has become resident in the Karoo, especially in the Beaufort West to Leeu Gamka area. In April and May 2007 there was an invasion of Red-billed Queleas in the Western Cape province, particularly on the Cape Peninsula and Overberg region. Sixty-eight percent of records were within 5 km of the coast, over a stretch of 1 000 km of coastline. Adult males in breeding plumage were frequently observed, indicating that this irruption was not limited to post-juvenile dispersal. This influx was not repeated in 2008, but from April 2008 to January 2009, monthly records of queleas were higher than the combined monthly totals in years prior to the influx. The increasing occurrence of queleas in the Western Cape province is a potential threat to a major wheat-producing area and continued monitoring is required. 相似文献
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Oreopithecus bambolii is a Late Miocene hominoid with an extensive fossil record in the Baccinello Basin (Tuscany, Italy), and was the only western European hominoid to survive a major extinction event ca. 9.6 Ma (millions of years ago). Oreopithecus lived in the insular Tusco-Sardinian paleobioprovince, where it evolved many unique anatomical specializations that make it important for understanding the mechanisms and history of Late Miocene hominoid evolution. The eventual extinction of Oreopithecus and its associated fauna ca. 6.5 Ma has generally been attributed to interaction with species that arrived from continental Europe following tectonic collision of the Tusco-Sardinian province with mainland Italy, but palynological, paleontological, and sedimentological records indicate an environmental shift toward more variable climate across the extinction event.To explore the possibility of environmental change as a contributing factor in the extinction of Oreopithecus, we developed a stable carbon and oxygen isotope record from organic matter in paleosols from the Baccinello Basin. These data show very low temporal and spatial variability (indicating plant ecosystem stability through time and space) and provide no evidence for ecologically significant changes in floral composition spanning the extinction event, suggesting that environmental change was not an underlying cause for the extinction of Oreopithecus and its associated fauna. The carbon isotope values fall entirely within the range of isotopic variability for modern plants following the C3 photosynthetic pathway (trees, shrubs, cool-season grasses), indicating that C4 vegetation (warm-season grasses) was not an important component of biomass. When corrected for temporal variation in the carbon isotopic composition of atmospheric carbon dioxide, the paleosol carbon isotope values are consistent with predicted values based on modern plants and the Baccinello palynoflora, supporting the reliability of paleosol isotopic records as paleoecological proxies. 相似文献
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正2017年7月25日,在河北省唐山市海港开发区金沙岛一季节性水塘(39°10′26″N,118°58′16″E)观察到1只小凤头燕鸥(Thalasseus bengalensis),该鸟停歇约10 min后飞离该地。至8月7日,在该地点多次记录到单只小凤头燕鸥停歇洗浴。附近亦有普通燕鸥(Sterna hirundo)、白额燕鸥(S.albifrons)、反嘴鹬(Recurvirostra avosetta)、环颈鸻(Charadrius alexandrinus)、青脚滨鹬(Calidris temminckii)等水鸟在此停歇或觅食。所发现的小凤头燕鸥 相似文献