Variation in laying date, clutch size, egg size, and egg composition of yellow-headed blackbirds (Xanthocephalus xanthocephalus): a supplemental feeding experiment

Earth & Environmental Sciences

• laying date 100%
• egg size 86%
• clutch size 81%
• egg 51%
• nest 44%
• egg production 37%
• food 36%
• food availability 31%
• wetland 31%
• food supplementation 25%
• bird 11%
• protein 9%

Agriculture & Biology

• Xanthocephalus xanthocephalus 96%
• egg composition 80%
• clutch size 57%
• dietary supplements 47%
• dates (fruit) 42%
• wetlands 39%
• nests 32%
• eggs 31%
• food availability 27%
• egg production 25%
• natural foods 16%
• birds 8%
• proteins 4%