Changes in pack ice extent and duration may affect predictable foraging grounds that are within foraging range of each breeding or moult location; similarly changes in polynya extent and persistence will almost certainly be an important factor.
For long-term social aggregations home sites need to be defendable and within foraging distance of a reliable food source [10].
The body weight losses were significantly greater for male than female within foraging populations (P < 0.05); however, this pattern was not the case for overwintering populations.
Marked birds disperse randomly (Huber 1991; Heinrich et al. 1994; Marzluff et al. 1996) and genetic relatedness within foraging groups is not higher than between them (Parker et al. 1994), which would be expected if siblings joined the nonbreeders together.
It is known that many wild and domesticated species of mammals and birds synchronise their activities within foraging groups, such that a majority of the group initiate and conduct the same activity (such as grazing) at the same time.
The relative residuals (absolute residuals divided by the predicted values) from this common regression model were then compared in a Nested ANOVA with foraging niche category (original subterranean – leaf-litter – surface swarm raiding – reversal subterranean) as a fixed factor and species as a random factor nested within foraging niche category.
Flight corridors following linear topographic features and major wind currents (Katzner et al. 2012; de Lucas et al. 2012b), areas within foraging habitat (Martínez-Abraín et al. 2012), and breeding grounds (Bevanger et al. 2010; Eichhorn et al. 2012) have been identified as sites of high flight abundance and activity in numerous studies.
The WSC contained within the forage should be sufficient to balance the CP concentration of herbage in order to maximize microbial protein synthesis.
If you're lucky, you might have an apple tree within easy foraging distance or in your garden, its branches soon to be groaning with more fruit than you can munch, peel, bake, chutney, crumble, pie, jelly or jam with.
Within each forage-stocking rate combination, cows were fed supplement at 0.33 or 0.5 kg of supplement (as-fed basis)/kg daily milk production.
