scholarly journals Brown-Headed Cowbird Parasitism on Endangered Species: Relationships with Neighboring Avian Species

2011 ◽  
Vol 70 (4) ◽  
pp. 474-482 ◽  
Author(s):  
Shannon L. Farrell ◽  
Michael L. Morrison ◽  
R. Neal Wilkins ◽  
R. Douglas Slack ◽  
Andrew J. Campomizzi
2019 ◽  
Vol 25 (1) ◽  
pp. 41-64
Author(s):  
Thom Van Dooren

In September 2011, a delicate cargo of 24 Nihoa Millerbirds was carefully loaded by conservationists onto a ship for a three-day voyage to Laysan Island in the remote Northwest Hawaiian Islands. The goal of this effort was to establish a second population of this endangered species, an “insurance population” in the face of the mounting pressures of climate change and potential new biotic arrivals. But the millerbird, or ulūlu in Hawaiian, is just one of the many avian species to become the subject of this kind of “assisted colonisation.” In Hawai'i, and around the world, recent years have seen a broad range of efforts to safeguard species by finding them homes in new places. Thinking through the ulūlu project, this article explores the challenges and possibilities of assisted colonisation in this colonised land. What does it mean to move birds in the context of the long, and ongoing, history of dispossession of the Kānaka Maoli, the Native Hawaiian people? How are distinct but entangled process of colonisation, of unworlding, at work in the lives of both people and birds? Ultimately, this article explores how these diverse colonisations might be understood and told responsibly in an era of escalating loss and extinction.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shi Li ◽  
Dan Li ◽  
Lishi Zhang ◽  
Weiping Shang ◽  
Bo Qin ◽  
...  

Abstract Background The Rufous-backed Bunting, Emberiza jankowskii, is an endangered species that is primarily distributed in Inner Mongolia, China. The main threats to the continued persistence of this species are habitat loss and degradation. However, the impact of population loss on genetic diversity remains unclear. To support future conservation and management efforts, we assessed the genetic diversity and population structure of E. jankowskii using mitochondrial DNA and microsatellites. Methods Blood samples were collected from 7‒8-day-old nestlings in Inner Mongolia, China between May and August of 2012 and 2013. Mitochondrial DNA sequences and microsatellite markers were used to assess the genetic diversity, genetic structure and inbreeding of E. jankowskii. The results of genetic diversity and inbreeding were compared to other avian species. Results We found an unexpectedly high level of genetic diversity in terms of mitochondrial DNA and microsatellite compared to other avian species. However, there were high levels of gene flow and minimal genetic structuring, among the fragmented breeding populations of E. jankowskii in Inner Mongolia. These findings suggest that E. jankowskii in Inner Mongolia is a metapopulation. Despite the high genetic diversity of E. jankowskii, local populations in each small patch remain at risk of extinction due to habitat loss. In addition, the E. jankowskii population has a high risk of inbreeding. Conclusions To minimize further loss of genetic diversity of this endangered species, we suggest that the E. jankowskii in Inner Mongolia should be considered as a protected species for management purposes. Conservation efforts should concentrate on E. jankowskii habitat management. This may be most effectively achieved by protecting the current breeding habitats and prohibiting over-grazing.


2007 ◽  
Vol 149 (9) ◽  
pp. 403-407 ◽  
Author(s):  
P. Nebbia ◽  
C. Tramuta ◽  
M. Ortoffi ◽  
E. Bert ◽  
S. Cerruti Sola ◽  
...  
Keyword(s):  

1994 ◽  
Vol 39 (1) ◽  
pp. 71-72
Author(s):  
Donald M. Kaplan
Keyword(s):  

Author(s):  
Michael L. DeKay ◽  
Gary H. McClelland
Keyword(s):  

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