:Actually, the article Niche segregation exists, but its talk page doesn't ( because no-one's put anything into it ).
2.
Evidence for niche segregation as the result of reinforcement of reproductive barriers is especially convincing in those cases in which such differences are not found in allopatric but only in sympatric locations.
3.
Concerning the possibility that competition has led to segregation in the evolutionary past, Wiens ( 1974, 1984 ) concluded that such assumptions cannot be proven, and Connell ( 1980 ) found that interspecific competition as a mechanism of niche segregation has been proven only for some pest insects.
4.
Various authors, using a variety of statistical methods, have consistently found that species with different copulatory organs may co-occur in the same microhabitat, whereas congeners with identical or very similar copulatory organs are spatially segregated, convincing evidence that reinforcement and not competition is responsible for niche segregation.
5.
Barker ( 1983 ), in his review of competition in " Drosophila " and related genera, which are among the best known animal groups, concluded that the idea of niche segregation by interspecific competition is attractive, but that no study has yet been able to show a mechanism responsible for segregation.
6.
Also, where multiple species of gleaning birds forage in the same area, they may show niche segregation; for example, one species may stick to conifers while another species inhabits broadleaf trees, or they may even divide up a habitat, with smaller species feeding among higher, smaller tree branches and larger species staying on lower, larger branches.
7.
In the former, body length and length of genitalia are practically identical, in the latter, they are significantly different, and much more so for the genitalia than the body, convincing evidence that reinforcement is an important factor ( and possibly the only one ) responsible for niche segregation .-The very detailed studies of communities of Monogenea parasitic on the gills of marine and freshwater fishes by several authors have shown the same.
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