Does optimal foraging theory explain why suburban Florida scrub-jays (Aphelocoma coerulescens) feed their young human-provided food?
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چکیده
منابع مشابه
Circulating carotenoid levels are negatively associated with previous reproductive success in Florida Scrub-Jays (Aphelocoma coerulescens)
The relationship between individual fitness and antioxidants and oxidative stress has come under increasing scrutiny of late. In particular, associations between oxidative balance indicators and reproductive success in the wild have been inconsistent in the limited prior work on this topic. Studies spanningmultiple seasons and antioxidant types are particularly lacking. Here, we examined associ...
متن کاملScrub jays (Aphelocoma coerulescens) form integrated memories of the multiple features of caching episodes.
Four experiments examined whether food-storing scrub jays remember when and where they cached different foods. The scrub jays cached and recovered perishable and nonperishable foods in visuospatially distinct and trial-unique cache sites. They rapidly learned to avoid searching for foods that had perished by the time of recovery, while continuing to search for the same foods after shorter reten...
متن کاملProspective Cognition The Prospective Cognition of Food Caching and Recovery by Western Scrub-Jays (Aphelocoma californica)
The role of prospective cognition in food caching and recovery by western scrub-jays (Aphelocoma californica) is reviewed. These birds anticipate the short-term consequences of searching for cached food at recovery by reducing their searches for devalued food items. Two further lines of evidence suggest that the jays are also capable of more long-term prospection. First, the caching of food ite...
متن کاملThe effects of low levels of light at night upon the endocrine physiology of western scrub-jays (Aphelocoma californica).
Florida scrub-jays (Aphelocoma coerulescens) in the suburbs breed earlier than jays in native habitat. Amongst the possible factors that influence this advance (e.g., food availability, microclimate, predator regime, etc.), is exposure to artificial lights at night (LAN). LAN could stimulate the reproductive axis of the suburban jays. Alternatively, LAN could inhibit pineal melatonin (MEL), thu...
متن کاملRe-caching by Western Scrub-Jays (Aphelocoma californica) Cannot Be Attributed to Stress
Western scrub-jays (Aphelocoma californica) live double lives, storing food for the future while raiding the stores of other birds. One tactic scrub-jays employ to protect stores is "re-caching"-relocating caches out of sight of would-be thieves. Recent computational modelling work suggests that re-caching might be mediated not by complex cognition, but by a combination of memory failure and st...
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ژورنال
عنوان ژورنال: Behavioral Ecology and Sociobiology
سال: 2006
ISSN: 0340-5443,1432-0762
DOI: 10.1007/s00265-006-0187-z