This information was copied from the "Carnivora" forum: Carnivora > Zoology > Interspecific Conflict > Harpy Eagle v Philippine Eagle
Forum site:
http://carnivoraforum.com/topic/9740955/2/The site says this information comes from the following publication:
Ferguson-Lees, J.; Christie, D. (2001). Raptors of the World. London: Christopher Helm. ISBN 0-7136-8026-1
Note: "Haring Ibon" is a Philippine Eagle
Total Length (from tip of bill to tip of longest tail feather):
1. Haring Ibon (average) = 1021 mm or 1.021 meter
2. Harpy Eagle (average) = 900.75 mm or 0.90075 meter
3. Golden Eagle (single) = 884 mm
4. Kenyan Eagle (single) = 855 mm
5. American Bald Eagle (single) = 829 mm
Bill Gape
1. Haring Ibon = 73.66 mm
2. American Bald Eagle = 71 mm
3. Harpy Eagle = 64.75 mm
4. Golden Eagle = 60 mm
5. Kenyan Eagle = 55 mm
Bill Culmen
1. Haring Ibon = 72.33 mm
2. Harpy Eagle = 51 mm
3. American Bald Eagle = 50 mm
4. Golden Eagle = 45 mm
5. Kenyan Eagle = 45 mm
Bill Height
1. Haring Ibon = 50.66 mm
2. Harpy Eagle = 36 mm
3. American Bald Eagle = 33 mm
4. Kenyan Eagle = 33 mm
5. Golden Eagle = 27 mm
Tarsus (Foot length)
1. Haring Ibon = 145 mm
2. Harpy Eagle = 121.25 mm
3. Kenyan Eagle = 115 mm
4. Golden Eagle = 110 mm
5. American Bald Eagle = 95 mm
Talon (Hind toe claw)
1. Harpy Eagle = 64.75 mm
2. Kenyan Eagle = 62 mm
3. Haring Ibon = 55.66 mm
4. Golden Eagle = 55 mm
5. American Bald Eagle = 39 mm
Wing Chord
(from bend or shoulder to tip of longest primary feather)
1. Golden Eagle = 654 mm
2. Haring Ibon = 608.66 mm
3. American Bald Eagle = 570 mm
4. Kenyan Eagle = 545 mm
5. Harpy Eagle = 544.75 mm