21. The Virgin Islands dwarf sphaero appears to favour mesic microhabitats within their dry ecological niche . 22. Species that mother their offspring have come to dominate every ecological niche in which they dwell. 23. So, it seems logical to refer to vacant niches . ( see also ecological niche .) 24. About the Signature Theater, he said, " Here's innovation, an ecological niche being discovered, almost invented. 25. The ecological niche once filled by high-level predators is now held mainly by boats from Ballard. 26. The bobcat prey base overlaps with that of other midsized predators of a similar ecological niche . 27. Rather, they were a sister group that remained in the ecological niche of their common ancestor. 28. Some of the earliest flying insects were large predators : it was a new ecological niche . 29. The reality is that, if a new species occupies a different ecological niche , both may coexist. 30. The teratorns held sway over the ecological niche of the extant group especially in North America.