A male scrub jay must have his own territory for foraging and nesting, and territory is limited.
For animals, and essentially for people too, Wilbrecht says, adolescence is the time to leave the nest, establish a territory, forage for food, or for a livelihood, and maybe choose a mate.
We hypothesized that female territory size, foraging activity, overlap with other adult females, and reproduction indices would differ among treatments (switchgrass monocrop, intercropped switchgrass, and control plots) due to variation in grass abundance and vertical vegetation cover.
The overwhelming view of conservationists now is that the species is well adapted to low- and moderate-severity wildfires, and appears to prefer high-severity burned areas within their territory for foraging.
But that's foraging territory, which is outside scope.
We found no treatment effect on territory size, but foraging activity was 2 times higher in monocrop than control plots.
Summer was chosen as it represents the season with the greatest risk of transmission from external sources, due to cattle returning to pasture in late spring and summer, combined with increases in badger territory sizes and foraging activity in summer [ 8].
For example, if male coloration in the wild is a cue for health, territory quality, or foraging ability (e.g., Wolfenbarger 1999; Saks et al. 2003; Karino et al. 2005), how is it expressed under captive conditions where veterinary care is ongoing, food is provided ad libitum, and housing is standardized?
The Mozambique tilapia (Oreochromis mossambicus) is a good model candidate to test this hypothesis because males practice continuous lekking [ 12], without leaving their territories to forage, during the entire breeding period.
In barn swallows, which defend nesting but not foraging territories, this might imply differences in aerial foraging ability and thus differences in supply of dietary antioxidants.
