Tweet In some previous entries in this blog ( 1 , 2) as well as in a publication , we commented on the importance the distinction between the conservation of wildlife populations and respect the rights of individual animals. I just read an article that illustrates very well the conservation of populations and respect for animal rights are two different things, sometimes they can go in the opposite.
Atlapetes pallidiceps is one of the most endangered birds of South America, who even was thought extinct until recently. In a recent study, Niels Krabbe and colleagues documented an encouraging increase in the population of these birds for over 10 years Yunguilla reserve, Ecuador. The recovery of the population seems to be due to a conservation action undertaken in the study area, consisting of controlling populations of Chamon Molotrhus bonariensis, a bird brood parasitism (laying eggs in the nests of other birds, reducing the reproductive success of hosts). What is meant by control? Basically, kill "Cowbird control Undertaken by WAS AS, Who Spent The Entire breeding season Every year from 2003 onwards (late February to early May) shooting cowbirds (Molothrus bonariensis ) Females preferentially, as soon as These Approaches: a or Enter the book. " .
In total, killed (shot) 239 Chamone (mainly Chamona) in six years and this has apparently resulted in a reduction in the rate of parasitism of nests A. pallidiceps , which decreased from 61% to almost 0%. In parallel with the control Chamon, the population of the endangered species grew, as The following figure shows.
Is it more important to keep the population of an endangered species or the lives of dozens of individuals of other species? For conservationists the answer seems clear. For animals not so obvious.
@ cdanielcadena
Krabbe, N., Juin, M., & Sornoza, A. (2011). Population Marked Increase in Pale-headed Brush-finch Atlapetes pallidiceps in response to cowbird control Journal of Ornithology, 152 : 219-222 DOI: 10.1007/s10336-010-0567-z
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