Raven scavenging favours group foraging in wolves

@article{Vucetich2004RavenSF,
  title={Raven scavenging favours group foraging in wolves},
  author={John A. Vucetich and Rolf O. Peterson and Thomas A. Waite},
  journal={Animal Behaviour},
  year={2004},
  volume={67},
  pages={1117-1126}
}

Figures from this paper

Pack size in humanized landscapes: the Iberian wolf population

Group living is an important behavioral feature in some species of mammals, although somewhat uncommon in the Order Carnivora. Wolves Canis lupus are highly social and cooperative carnivores that

Achilles' Heel of Sociality Revealed by Energetic Poverty Trap in Cursorial Hunters

These results demonstrated a mechanistic example of pervasive selection for maximal body size (Cope’s rule), leading to a macroevolutionary ratchet, where sociality linked to hypercursoriality is betrayed by an Achilles' heel.

Effect of Sociality and Season on Gray Wolf (Canis lupus) Foraging Behavior: Implications for Estimating Summer Kill Rate

The results demonstrate that seasonal patterns in the foraging behavior of social carnivores have important implications for understanding their social behavior and estimating kill rates, and are also important for applications of GPS collars to estimate kill rates.

Foraging and feeding ecology of the gray wolf (Canis lupus): lessons from Yellowstone National Park, Wyoming, USA.

As patterns of wolf density, prey density, weather, and vulnerability of prey change, in comparison with the conditions of the study period described here, it is predicted that there will also be significant changes in wolf predation patterns and feeding behavior.

Gifts of an enemy: scavenging dynamics in the presence of wolves (Canis lupus)

Carrion represents an important resource for carnivores. Examining competition for carrion in a risk–reward framework allows for a better understanding of how predator guilds compete for and benefit

The noble cats and the big bad scavengers: effects of dominant scavengers on solitary predators

It is indicated that prey loss to dominant scavengers is a widespread phenomenon among felids worldwide, including forest habitats, and suggested that ursid scavenging, by promoting the hunting of smaller prey, may have played an important role in the evolution of the Lynx genus as well as other predators in the Holarctic.

Population responses of common ravens to reintroduced gray wolves

Whether subsidies provided through wolves are a limiting factor for raven populations in general and how the wolf reintroduction to Yellowstone National Park in 1995–1997 affected raven population abundance and distribution on the Yellowstone's Northern Range specifically are investigated.

Coyotes and recolonizing wolves: social rank mediates risk-conditional behaviour at ungulate carcasses

The causes and consequences of partial prey consumption by wolves preying on moose

This work presents the first strong test for the cause of PPC in a cursorial vertebrate predator with intestinal digestion: wolves (Canis lupus) feeding on moose (Alces alces).

Predator-dependent functional response in wolves: from food limitation to surplus killing.

It is suggested the surplus killing by small packs is a result of an optimal foraging strategy to consume only the most nutritious parts of easy accessible prey while avoiding the risk of being detected by humans.
...

References

SHOWING 1-10 OF 85 REFERENCES

Common ravens, Corvus corax, preferentially associate with grey wolves, Canis lupus, as a foraging strategy in winter

It is shown that ravens preferentially associate with wolves in both the presence and absence of food, resulting in the discovery of carcasses and suppression of ravens' innate fear of novel food sources.

Effects of Population Density and Pack Size on the Foraging Ecology of Gray Wolves

A decline in the gray wolf ( Canis lupus ) population in Isle Royale National Park prompted an intensive study of radiocollared individuals in 1988–1991, complementing an ongoing study begun in 1958.

Communal hunting and pack size in African wild dogs, Lycaon pictus

Why Lions Form Groups: Food is Not Enough

It is found that mothers keep their cubs in a creche and form highly stable maternity groups that are effective in defending the cubs against infanticidal males, and larger groups successfully repel smaller ones in territorial disputes.

Wolf Pack Size And Food Acquisition

Thurber and Peterson (1993) used considerably more data and demonstrated that for wolves preying primarily on moose on Isle Royale, food acquisition per wolf decreased with increased pack size, which tended to refute the claim that wolves live in packs in order to facilitate the killing of larger prey.

Feeding success in African wild dogs : does kleptoparasitism by spotted hyenas influence hunting group size ?

It is proposed that kleptoparasitism by spotted hyenas would have placed a major constraint on the ability of individual wild dog packs to recover from episodic disasters.

Influence of competitors on caching behaviour in the common raven,Corvus corax

It is shown that in the presence of competitors, common ravens instead cached further from the food source, provided they had space into which they could escape from the sight of the competitors.

Kill rate by wolves on moose in the Yukon

Wolf predation was found to be mainly additive on both moose and caribou populations, and Wolves did not show a strong switching response away from moose as the ratio of caribus to moose increased in winter.

Ecological and social determinants of group size in transient killer whales

The typical size of groups consisting only of adult and subadult whales that were engaged primarily in foraging activities confirms that these individuals are found in groups that are consistent with the maximization of energy intake hypothesis.

Selfish sentinels in cooperative mammals.

Support is provided for the theory that guarding may be an individual's optimal activity once its stomach is full if no other animal is on guard by showing that, in groups of meerkats, animals guard from safe sites, and solitary individuals as well as group members spend part of their time on guard.
...