Results 71 to 80 of about 103,701 (215)
Diurnal habitat selection of migrating Whooping Crane in the Great Plains
Avian Conservation and Ecology, 2019 Available stopover habitats with quality foraging opportunities are essential for migrating waterbirds, including Whooping Crane (Grus americana). Several studies have evaluated habitats used by Whooping Crane for roosting throughout its migration ...
David M. Baasch +7 more
doaj
Sandhill Crane Roost Selection, Human Disturbance, and Forage Resources [PDF]
, 2016 Sites used for roosting represent a key habitat requirement for many species of birds because availability and quality of roost sites can influence individual fitness. Birds select roost sites based on numerous factors, requirements, and motivations, and
Brandt, David A. +2 more
core +1 more source
Frontiers in Conservation ScienceFor more than 50 years, the United States (US) Endangered Species Act (ESA) has contributed to the protection, survival, and recovery of numerous species including gray wolves (Canis lupus), grizzly bears (Ursus arctos horribilis), whooping cranes (Grus ...
Heather A. L. Knight +4 more
doaj +1 more source
野生动物学报, 1990 四月初,在得克萨斯州南部的盐泽地及淡水湖里,到处是天鹅的叫声。忽地,两只成年的美洲鹤带着他们的两只小鹤展翅飞起,悠闲地盘旋着,升入天空,很快就看不见了。他们开始了一年一次长达2500英里的冒险旅行。这次旅行将把它们带到加拿大北部的巢区,秋天他们将再回到得克萨斯州的越冬地来。美洲鹤（Grus americana）是北美洲特有的一种鹤,十分美丽,长而弯曲的脖子和长长的腿占了身高的大部分,长长的尖嘴、红黑色的头部、乌黑发亮的翼尖在雪白的体羽衬托下更加鲜明了。他们展开的双翅竟有7.5英尺宽 ...
张化危
doaj
Protecting Species or Endangering Development? How Consultation Under the Endangered Species Act Affects Energy Projects on Public Lands [PDF]
, 2016 Executive Summary Throughout its forty-three-year history, the Endangered Species Act (“ESA”) has been one of the most celebrated environmental laws but also one of the most reviled.
Puig-Williams, Vanessa +2 more
core +1 more source
Ecological characterization of the Florida springs coast: Pithlachascotee to Waccasassa Rivers [PDF]
, 1990 This report covers the upper coast of west-central Florida. This region includes the drainage basins and nearshore waters of the west coast of Florida between, but not including, the Anclote River basin and the Suwannee River basin.
Bland, Michael J. +4 more
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Evolution and phylogeny of birds - Taxonomic consequences [PDF]
, 2012 Nucleotidsequenzen von mitochondrialen und nucleären Markergenen eignen sich hervorragend, um die Phylogenie und Evolution der Vögel zu untersuchen. Eine kürzlich publizierte Analyse mit 19 Kerngenen (Hackett et al.
Wink, Michael
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Non-native and naturalized bird species (neozoa) in Germany, part I: occurrence, population size and status [PDF]
, 2012 Dies ist der erste Bericht der Projektgruppe Neozoen der DO-G. Er beinhaltet eine Zusammestellung aller bisher bekannt gewordenen Vorkommen von nichtheimischen Vogelarten in Deutschland und fasst unsere Kenntnisse über Auftreten, Brutbestand ...
Bauer, Hans-Günther, Woog, Friederike
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Rare and Endangered Vetebrates of Ohio [PDF]
, 1973 Author Institution: U.S. Soil Conservation Service; Introductory Biology Program, The Ohio State University; School of Natural Resources, The Ohio State University; and Division of Wildlife, Ohio Department of Natural ResourcesThis paper, an annotated ...
Burnard, R. K. +3 more
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