Seasonal and age-dependent dietary partitioning between the great Black-backed and Herring Gulls

Agriculture & Biology

• age structure 12%
• birds 7%
• blood 7%
• breeding 7%
• Canada 10%
• chicks 39%
• crabs 11%
• diet 31%
• energy content 13%
• feathers 12%
• feeding preferences 14%
• fish 7%
• habitats 7%
• herring 15%
• krill 16%
• Laridae 13%
• Larus argentatus 86%
• Larus marinus 100%
• mackerel 15%
• Meganyctiphanes norvegica 20%
• methodology 3%
• nests 9%
• pellets 33%
• predators 9%
• rearing 10%
• sampling 4%
• Scomber scombrus 18%
• seabirds 13%
• stable isotopes 25%
• sympatry 12%
• tissues 5%
• trophic levels 41%

Earth & Environmental Sciences

• age class 11%
• analysis 5%
• bird 8%
• blood (tissue) 15%
• breeding 10%
• coexistence 10%
• crab 10%
• diet 45%
• energy 5%
• feather 12%
• fish 6%
• generalist 11%
• habitat 6%
• incubation 8%
• nest 11%
• partitioning 52%
• predator 8%
• rearing 12%
• resource 5%
• sampling 5%
• seabird 11%
• stable isotope 17%
• trophic level 31%
• young 7%