Overview of Energy Requirements for Harpy Eagles

How much food do I need?

Harpy Eagles are carnivorous animals and consume a variety of different prey including small mammals such as sloths and monkeys.

Prey of Harpy Eagle- nationalgeographic.com

Prey of Harpy Eagle- nationalgeographic.com

chart harpy eagle
BMR (Basal Metabolic Rate) is the basic amount of energy used by the organism at complete rest but not sleeping. This rate is usually measured as amount of kJ per hour. (kJ/h) Female Harpy Eagles have a BMR of 10.4kJ/h assuming the mass is 900g. Male Harpy Eagles have a BMR of 6.86kJ/h assuming the mass is 480g.*Since female Harpy Eagles are much larger than males, values for each sex are shown in the chart above.

DEE (Daily Energy Expenditure) is the amount of energy that an organism needs to breath, circulate blood, digest food and be physically active. Female Harpy Eagles have a DEE of 26kJ/day where Male Harpy Eagles have a DEE of 17.15kJ/day.

Energy Required for Growth is the amount of energy needed for growing animals (Young to Mature Adult). Female Harpy Eagles need 23.4kJ/h (which is an extra 13kJ/h on top of BMR), Male Harpy Eagles need 15.03kJ/h (which is an extra 8.17 kcal/h added to BMR) to ensure healthy growth, assuming the above BMR.

Energy Required for Reproduction is the amount of energy needed during the pregnancy. As shown above, Female Harpy Eagle needs 13.42kJ/h (which is an additional 3.02kJ/h on top of BMR) to ensure a healthy pregnancy,

Food Consumptions to meet energy standards (Rabbit) = 2165kJ/rabbit (assuming rabbit is 1lb)

Since Male Harpy Eagles need 6.86kJ/h, to satisfy their BMR, this means that they only need 0.32% of a whole rabbit to meet their BMR standard/ hour.

Since Female Harpy Eagles need 10.4kJ/h, to satisfy their BMR, this means that they only need 0.48% of a whole rabbit to meet their BMR standard/ hour.

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