How long will a grey heron stay full after eating a human
A grey heron (1.26–1.44 kilograms, 15 years 8 months) can feed on a human (62–76 kilograms, 33 years): one prey keeps it full for 11–12 months, so it needs about 0.003 per day.
How long does a human last a grey heron?
About 11–12 months.
How many humans does a grey heron eat per day?
About 0.003 per day.
How is it worked out how long the food lasts?
We look at how much food such an animal needs per day and how much there is in the prey; other masses can be set in the calculator.