Food availability, energetic constraints and reproductive development in a wild seasonally breeding songbird

Earth & Environmental Sciences

• songbird 100%
• food availability 85%
• hormone 76%
• breeding 72%
• energetics 65%
• food 37%
• secondary sexual characteristics 33%
• bird 22%
• plasma 21%
• peptide 18%
• endocrine system 13%
• androgen 12%
• testosterone 12%
• brain 8%
• environmental conditions 7%
• organism 6%
• cell 5%
• effect 4%

Agriculture & Biology

• songbirds 84%
• food availability 73%
• gonadotropin inhibitory hormone 59%
• breeding 43%
• luteinizing hormone 37%
• reproductive system 27%
• gonadotropin-releasing hormone 25%
• Melozone 23%
• gonads 21%
• seasonal development 17%
• hypothalamic hormones 17%
• peptides 16%
• neuropeptide Y 15%
• bird control 14%
• birds 14%
• anterior pituitary 13%
• androgens 12%
• testosterone 10%
• brain 8%
• environmental factors 7%
• duration 7%
• organisms 6%
• cells 3%