Article Abstract:
Habitat selection by the western kingbird in western Nebraska was analyzed using hierarchical analysis. Preferred macrohabitats had fewer but larger trees, resulting in an open canopy with taller ground cover and more shrubs. Maximum canopy height was the only variable significantly different between used and unused habitats. The preferred microhabitats were larger trees which provide a large number of available perches. The western kingbird appears to choose its macrohabitat first, then followed by the selection of territories, nest trees and nest sites.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
An important factor in the selection of habitat in Buff-necked Ibis (Theristicus caudatus) is the reproductive success of conspecifics. J.A. Donazar et al. presented data suggesting that breeding parameters did not vary significantly across colony substrata. However, an alternative interpretation of the data is possible. Rate of growth of colonies is correlated with reproductive success as indicated by brood size. Greater reproductive success in a previous year would attract more birds the following year and increase the colony size.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
Northern Spotted Owls have been found to select habitat, as well as foraging sites, according to the abundance of prey. Such a pattern of prey and site selection seems to provide the owls with energetic benefit. Owls also choose to forage at late seral forest edge sites, where dusky-footed woodrats are most abundant. The owl's affinity for these types of forests may be then explained by the energetic benefit that it gains from the selection of woodrats.
User Contributions:
Comment about this article or add new information about this topic: