Results 121 to 130 of about 28,695 (215)
The San Luis Valley (SLV), Colorado is a critical stopover area for Rocky Mountain Population greater Sandhill Cranes ( Antigone canadensis tabida ). During spring and autumn, cranes use crops for foraging and water resources adjacent to foraging areas ...
Rachel A Vanausdall +4 more
doaj +1 more source
Long-distance migratory organisms are under strong selection to migrate quickly. Stopovers demand more time than flying and are used by individuals to refuel during migration, but the effect of fuel loads (fat) acquired at stopover sites on the ...
Camila Gómez +8 more
semanticscholar +1 more source
Clarifying space use concepts in ecology: Range vs. occurrence distributions
Abstract Quantifying animal movements is necessary for answering a wide array of research questions in ecology and conservation biology. Consequently, ecologists have made considerable efforts to identify the best way to estimate an animal's home range, and many methods of estimating home ranges have arisen over the past half a century.
Jesse M. Alston +43 more
wiley +1 more source
Migration strategy is a key behavioral characteristic guiding how migratory species time their annual cycles and use habitat. Understanding variation in migration strategy within and among species and individuals can be useful for understanding how birds
Sarah J. Clements +8 more
doaj +1 more source
Warming caused a significant decrease in monarch fat mass, likely due to an observed reduction in sucrose concentration caused by warming of the nectar. Since sucrose fuels fall migration and overwintering, our results suggest climate warming may reduce migration success and overwinter survival.
Katherine Peel +3 more
wiley +1 more source
Many birds undertake long migrations when they are only a few months of age. Although they are typically of adult body size, their performance, and survival are often poor compared to adults.
Brendan J. McCabe +1 more
doaj +1 more source
Oxidative costs of migration: infections as an added burden
There is increasing evidence that over‐production of reactive species (RS) constitutes a significant physiological cost for migrating birds. The current view entails that RS during migration originate primarily from increased metabolic activity associated with prolonged flights and refueling.
Michael Tobler +5 more
wiley +1 more source
South Atlantic Bight – a final stop for Ruddy Turnstones migrating to the Arctic
Migratory stopover sites are of high conservation concern especially those sites where shorebirds concentrate in large numbers to acquire fat reserves to fuel continued flight to breeding grounds.
Felicia J. Sanders +5 more
doaj
Shorebirds typically spend more time fueling and refueling during migration than they spend in actual flight, and consequently their stopover ecology has important implications for fitness and conservation. We examined spatial variation and long‐term changes in stopover duration of radio‐tagged western sandpipers Calidris mauri over three decades on ...
Nils Warnock +7 more
wiley +1 more source
Balancing moult, migration, and breeding in a long‐lived partially migrant raptor
Moult, breeding, and migration are the three major life‐history events in the annual cycle of birds. All are energetically demanding processes that rarely overlap. In large raptors such as the Egyptian vulture Neophron percnopterus, completing a full moult may take more than one year, requiring birds to balance this process with other life‐cycle events.
Iñigo Zuberogoitia +19 more
wiley +1 more source

