The neural integration of environmental information by seasonally breeding birds

Agriculture & Biology

• gonadotropin-releasing hormone 100%
• birds 56%
• photoperiod 56%
• breeding 56%
• central nervous system 47%
• seasonal variation 40%
• hypothalamic hormones 33%
• monoamines 29%
• preoptic area 29%
• songbirds 26%
• nesting sites 24%
• photoreceptors 24%
• hypothalamus 23%
• serotonin 22%
• norepinephrine 21%
• neurons 19%
• concentrates 19%
• cells 14%