During the breeding seasons of 1990-1992 and 1994, we examined how habitat characteristics surrounding nestboxes influenced nesting success of eastern bluebirds (Sialia sialis} and nesting attempts by tree swallows (Tachycineta bicolor^), house wrens (Troglodytes aedon), bluebirds, house sparrows (Passer domesticus), and deer mice (Peromyscus spp.). Using linear regression analyses, significant...

—Nesting success of birds often is influenced by habitat features surrounding nests. However, few studies have investigated habitat influences at multiple levels and spatial scales. We examined the relationship between Blue Jay (Cyanocitta cristata) nesting success and habitat at three levels (macrohabitat, microhabitat, and nest site) and at three different scales within the microhabitat level...

The article presents the history of nesting, disappearance from fauna and current spatial distribution Great Cormorant (Phalacrocorax carbo L., 1758) breeding colonies in Baikal Siberia. main research sites were Selenga River Delta, Strait Maloye More islands Chivyrkuy Bay, Upper Angara Bay on Lake; Barguzin hollows, Gusinoe Lake Pribaikalye Transbaikalye, where this species once lived accordin...

Fire is an important agent of tree cavity creation and loss in some forest ecosystems. Even though cavity-bearing trees may be replaced over decades post fire, cavity-nesting animals depend on uninterrupted access to suitable nesting sites. Balancing the impacts fire availability recruitment cavities for wildlife important. We studied effects with nests Critically Endangered Orange-bellied Parr...

—Because reliable estimates of nesting success are very important to avian studies, the definition of a “successful nest” and the use of different analytical methods to estimate success have received much attention. By contrast, variation in the criteria used to determine whether an occupied site that did not produce offspring contained a nesting attempt is a source of bias that has been largel...

Large wildfire events in coniferous forests of the western United States are often followed by postfire timber harvest. The long-term impacts of postfire timber harvest on fire-associated cavity-nesting bird species are not well documented. We studied nest-site selection by cavity-nesting birds over a 10-year period (1994–2003), representing 1–11 years after fire, on two burns created by mixed ...

Abstract Agricultural intensification and abandonment of traditional agricultural practices are main drivers current insect declines. The resulting loss feeding nesting opportunities has led to a decrease in pollinator populations like wild bees. While the restoration floral resources been widely implemented bee conservation, resources, particularly for ground‐nesting species, barely considered...

In sea turtles, parental investment is limited to the nutrients and energy invested in eggs that will support embryonic development. Leatherback females have the largest clutches with the biggest eggs of the sea turtles and the highest reproductive output in reptiles. The migration between foraging sites and nesting beaches also represents high energy expenditure. The toxicokinetic of pollutant...

†These authors have contributed equally to this work. The nesting habits of ants play an important role in structuring ant populations. They vary from monodomy, a colony occupies a single nest, via polydomy, a colony occupies multiple adjacent nests, to supercoloniality, a colony spans over large territories comprising dozen to thousands nests without having any boundaries. The population struc...