Central Place Foraging in Starlings (Sturnus vulgaris). I. Patch Residence Time

10.2307/4357 ◽  
1984 ◽  
Vol 53 (1) ◽  
pp. 283 ◽  
Author(s):  
Alejandro Kacelnik
Keyword(s):  
Residence Time ◽  
Central Place ◽  
Sturnus Vulgaris ◽  
Central Place Foraging ◽  
Patch Residence Time

scholarly journals Flock Size and Foraging Decisions in Central Place Foraging White Storks, Ciconia Ciconia

Behaviour ◽  
1994 ◽  
Vol 129 (3-4) ◽  
pp. 279-292 ◽  
Author(s):  
Juan C. Alonso ◽  
Luis M. Carrascal ◽  
Rodrigo Muñoz-Pulido ◽  
Javier A. Alonso
Keyword(s):  
Residence Time ◽  
Central Place ◽  
Travel Distance ◽  
Intake Rate ◽  
Flock Size ◽  
Central Place Foraging ◽  
Foraging Decisions ◽  
White Storks ◽  
Load Size ◽  
Patch Residence Time

AbstractWe studied the foraging decisions of six individually marked white storks at a breeding colony in central Spain. Storks behaved as central place foragers, gathering in flocks to feed. Travel distance and patch residence time were positively correlated with the size of the foraging flock, but not with patch quality as estimated by the instantaneous food intake rate at the patch. Patch residence time was also positively correlated with travel distance to the patch, flock size being constant. In larger flocks individuals benefitted from a decrease in vigilance time and thus an increase in time spent actively feeding, which enabled birds to bring back to the nest a higher load size. These results suggest that storks followed simple rules of thumb based on flock size, rather than on the more complicated food availability estimations required by central place foraging models. We suggest that flock size could be the main cue used in foraging decisions by white storks and could be a simple rule for many other flock foraging species.

Central Place Foraging in Starlings (Sturnus vulgaris). II. Food Allocation to Chicks

10.2307/4887 ◽  
1990 ◽  
Vol 59 (2) ◽  
pp. 655 ◽  
Author(s):  
Alejandro Kacelnik ◽  
Innes Cuthill
Keyword(s):  
Central Place ◽  
Sturnus Vulgaris ◽  
Central Place Foraging ◽  
Food Allocation

Population and Community Consequences of Spatial Subsidies Derived from Central-Place Foraging

2007 ◽  
Vol 170 (6) ◽  
pp. 902
Author(s):  
Fagan ◽  
Frithjof Lutscher ◽  
Katie Schneider
Keyword(s):  
Central Place ◽  
Central Place Foraging ◽  
Spatial Subsidies

Tree Swallow selection for wetlands in agricultural landscapes predicted by central-place foraging theory

The Condor ◽  
2020 ◽  
Author(s):  
Andrew S Elgin ◽  
Robert G Clark ◽  
Christy A Morrissey
Keyword(s):  
Habitat Selection ◽  
Central Place ◽  
Foraging Theory ◽  
Agricultural Landscapes ◽  
Tree Swallow ◽  
Field Margins ◽  
Central Place Foraging ◽  
Prairie Pothole ◽  
Prairie Wetlands ◽  
Selection For

Abstract Millions of wetland basins, embedded in croplands and grasslands, are biodiversity hotspots in North America’s Prairie Pothole Region, but prairie wetlands continue to be degraded and drained, primarily for agricultural activities. Aerial insectivorous swallows are known to forage over water, but it is unclear whether swallows exhibit greater selection for wetlands relative to other habitats in croplands and grasslands. Central-place foraging theory suggests that habitat selectivity should increase with traveling distance from a central place, such that foragers compensate for traveling costs by selecting more profitable foraging habitat. Using global positioning system (GPS) tags, we evaluated habitat selection by female Tree Swallows (Tachycineta bicolor) at 4 sites containing wetlands and where terrestrial land cover was dominated by grasslands (grass, herbaceous cover) and/or cultivated cropland. We also used sweep-net transects to assess the abundance and biomass of flying insects in different habitats available to swallows (wetland pond margins, grassy field margins, and representative uplands). As expected for a central-place forager, GPS-tagged swallows selected more for wetland ponds (disproportionate to availability), and appeared to increasingly select for wetlands with increasing distance from their nests. On cropland-dominated sites, insect abundance and biomass tended to be higher in pond margins or grassy field margins compared to cropped uplands, while abundance and biomass were more uniform among sampled habitats at sites dominated by grass and herbaceous cover. Swallow habitat selection was not clearly explained by the distribution of sampled insects among habitats; however, traditional terrestrial sampling methods may not adequately reflect prey distribution and availability to aerially foraging swallows. Overall, our results underscore the importance of protecting and enhancing prairie wetlands and other non-crop habitats in agricultural landscapes, given their disproportionate use and capacity to support breeding swallow and insect populations.

Central place foraging in the white-fronted bee-eater

1982 ◽  
Vol 30 (4) ◽  
pp. 953-963 ◽  
Author(s):  
Robert E. Hegner
Keyword(s):  
Central Place ◽  
Central Place Foraging

scholarly journals Optimal central-place foraging by beavers: Tree-size selection in relation to defensive chemicals of quaking aspen

Oecologia ◽  
1988 ◽  
Vol 76 (2) ◽  
pp. 278-282 ◽  
Author(s):  
John M. Basey ◽  
Stephen H. Jenkins ◽  
Peter E. Busher
Keyword(s):  
Central Place ◽  
Tree Size ◽  
Quaking Aspen ◽  
Central Place Foraging ◽  
Size Selection
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