35mm:

Male: American Kestrel; Columbarius & Sucklei Merlin; Sharp-shinned Hawk; Eurasian Sparrowhawk.
Female: American Kestrel.

36mm:

Male: Columbarius, Sucklei, & Richardson's Merlin; Bat Falcon; Sharp-shinned Hawk;Eurasian Sparrowhawk.
Female: American Kestrel

37mm:

Male: Richardson's Merlin; Bat Falcon; Eurasian Sparrowhawk.
Female: Columbarius & Sucklei Merlin; Sharp-shinned Hawk.

38mm:

Male: Bat Falcon; Horsbrughi & Ruficollis Red-headed Falcon.
Female: Columbarius & Sucklei Merlin; Sharp-shinned Hawk.

39mm:

Male: Horsbrughi, Rufficollis & Chicquera Red-headed Falcon; Eurasian Hobby.
Female: Columbarius & Sucklei Merlin; Bat Falcon; Sharp-shinned Hawk.

40mm:

Male: Ruficollis Red-headed Falcon; Eurasian Hobby; Western Cooper's Hawk.
Female: Richardson's Merlin; Bat Falcon; Eurasian Hobby; Sharp-shinned Hawk; Eurasian Sparrowhawk.

41mm:

Male: Eurasian Hobby; Brazil & Northern Aplomado; Western Cooper's Hawk.
Female: Richardson's Merlin; Bat Falcon; Horsbrughi Red-headed Falcon; Eurasian Hobby; Eurasian Sparrowhawk.

42mm:

Male: Eurasian Hobby; Tiata Falcon; Brazil, Northern & Peru Aplomado; Western Cooper's Hawk.
Female: Bat Falcon; Horsbrughi, Ruficollis & Chicquera Red-headed Falcon; Eurasian Hobby; Eurasian Sparrowhawk.

43mm:

Male: Tiata Falcon; Brazil, Northern & Peru Aplomado; Eastern Cooper's Hawk. 
peregrine-merlin.
Female: Ruficollis & Chicquera Red-headed Falcon; Eurasian Hobby.

44mm:

Male: Tiata Falcon; Northern & Peru Aplomado; Orange-breasted Falcon; Eastern Cooper's Hawk. peregrine-merlin.
Female: Eurasian Hobby; Brazil & Northern Aplomado; Western Cooper's Hawk.

45mm:

Male: Northern & Peru Aplomado; Orange-breasted Falcon; Eastern Cooper's Hawk. 
peregrine-merlin. merlin-prairie. gyr-merlin. 
Female: Tiata Falcon; Brazil & Northern Aplomado; Western Cooper's Hawk.

46mm:

Male: Northern Aplomado; New Zealand & Orange-breasted Falcon; & Barbary Peregrine Falcons. merlin-prairie. gyr-merlin. 
Female: Tiata Falcon; Brazil, Northern & Peru Aplomado; Western & Eastern Cooper's Hawk.

47mm:

Male: New Zealand & Orange-breasted Falcon; Barbary Falcon; Red-naped Shaheen & Black Shaheen Peregrine Falcons.
Female: Tiata Falcon; Northern & Peru Aplomado; Eastern Cooper's Hawk.

48mm:

Male: New Zealand & Luggar Falcon; Barbary, Red-naped Shaheen, Black Shaheen, or Australian Peregrine Falcons; Black Sparrowhawk, gyr-merlin. 
Female: Tiata Falcon; Northern Aplomado; Eastern Cooper's Hawk. 
peregrine-merlin. merlin-prairie.

49mm:

Male: Luggar & Lanner Falcon; Barbary, Red-naped Shaheen, Black Shaheen, Australian, Spanish, & Anatum Peregrine Falcons; Black Sparrowhawk.
Female: Tiata Falcon; Orange-breasted Falcon. peregrine-merlin. merlin-prairie. gyr-merlin.

50mm:

Male: Luggar & Lanner Falcon; Black Shaheen, Spanish, Cassini, Tundra, & Anatum Peregrine Falcons; Black Sparrowhawk.
Female: New Zealand & Orange-breasted Falcon.

51mm:

Male: Lanner Falcon; Spanish, Cassini, Tundra, Anatum, & Eurasian Peregrine Falcons; Black Sparrowhawk, Black & Apache Goshawk; Peru Harris' Hawk. anatum-prairie.
Female: New Zealand & Orange-breasted Falcon; Barbary, Red-naped Shaheen, Black Shaheen Peregrine Falcons.

52mm:

Male: Australian, Cassini, Tundra, Anatum, Eurasian, Peales Peregrine Falcons; Prairie Falcon; Black, Apache, N A Western & Eastern Goshawk; Peru Harris' Hawk. anatum-prairie. 
Female: New Zealand, Orange-breasted, & Luggar Falcon; Barbary, Red-naped Shaheen, or Black Shaheen Peregrine Falcons; Black Sparrowhawk.

53mm:

Male: Australian, Spanish, Cassini, Eurasian, & Peales Peregrine Falcons; Prairie Falcon; Black, Apache, N A Western & Eastern Goshawk; Northern & Superior Harris' Hawk. 
Peale's-prairie. 
Female: New Zealand Falcon; Orange-breasted & Luggar Falcon; Barbary, Red-naped Shaheen, or Black Shaheen Peregrine Falcon; Black Sparrowhawk.

54mm:

Male: , Australian, Spanish, Eurasian, & Peales Peregrine Falcons; Prairie Falcon; N A Western & Eastern, & Eurasian Goshawk; Northern Harris' & Superior Harris' Hawk. Peale's-prairie. peregrine-saker. gyr-Barbary. 
Female: Luggar & Lanner Falcon; Cassini Peregrine Falcons; Black Sparowhawk; Black Goshawk.

55mm:

Male: Spanish & Eurasian Peregrine Falcons; N A Eastern & Eurasian Goshawk; Northern & Superior Harris' Hawk; Common Eurasian Buzzard. peregrine-saker. gyr-Barbary. 
Female: Lanner Falcon; Cassini, Tundra, & Anatum Peregrine Falcons; Black Sparrowhawk; Black, Apache & N A Western Goshawk; Peru Harris' Hawk.

56mm:

Male: Saker Falcon; Eurasian & Siberian Goshawk; Superior Harris' Hawk; Common Eurasian Buzzard. gyr-Barbary. 
Female: Lanner Falcon; Cassini, Tundra, Anatum, & Eurasian Peregrine Falcons; Prairie Falcon; Black, Apache & N A Western Goshawk; Peru & Northern Harris' Hawk. anatum-prairie.

57mm:

Male: Saker Falcon; Eurasian & Siberian Goshawk; Common Eurasian Buzzard. gyr-Barbary. gyr-lanner. gyr-anatum. gyr-prairie. gyr-saker. gyr-Peale's. 
Female: Cassini, Tundra, Anatum, Eurasian, & Peales Peregrine Falcons; Prairie Falcon; N A Western & Eastern Goshawk; Northern & Superior Harris' Hawk. anatum-prairie.

58mm:

Male: Siberian & Finnish Goshawk; Common Eurasian Buzzard; Western Red-tailed Hawk. 
gyr-lanner. gyr-anatum. gyr-prairie. gyr-saker. gyr-Peale's. 
Female: Anatum, Eurasian, & Peales Peregrine Falcons; Prairie Falcon; N A Western & Eastern & Eurasian Goshawk; Northern & Superior Harris' Hawk; Common Eurasian Buzzard. Peale's-prairie. peregrine-saker.

59mm:

Male: Gyrfalcon; Finnish Goshawk; Western Red-tailed Hawk. 
gyr-lanner. gyr-anatum. gyr-prairie. gyr-Peale's. 
Female: Peales Peregrine Falcon; Prairie Falcon; Saker Falcon; N A Eastern & Eurasian Goshawk; Northern & Superior Harris' Hawk; Common Eurasian Buzzard. Peale's-prairie. peregrine-saker. gyr-Barbary.

60mm:

Male: Gyrfalcon; Western Red-tailed Hawk. gyr-prairie. gyr-Peale's. 
Female: Peales Peregrine Falcon; Saker Falcon; Eurasian Goshawk; Northern & Superior Harris' Hawk; Common Eurasian Buzzard. Peale's-prairie. peregrine-saker. gyr-Barbary.

61mm:

Male: Gyrfalcon; Western Red-tailed Hawk; Rough-legged Hawk.
Female: Saker Falcon; Siberian Goshawk; Superior Harris' Hawk; Common Eurasian Buzzard. peregrine-saker. gyr-Barbary. gyr-lanner. gyr-anatum.

62mm:

Male: Western & Eastern Red-tailed Hawk; Rough-legged Hawk.
Female: Siberian & Finnish Goshawk; Western Red-tailed Hawk. 
gyr-lanner. gyr-anatum. gyr-prairie. gyr-saker. gyr-Peale's.

63mm:

Male: Gyrfalcon; Eastern Red-tailed Hawk; Rough-legged Hawk.
Female: Siberian & Finnish Goshawk; Western Red-tailed Hawk; Rough-legged Hawk.
gyr-lanner. gyr-anatum. gyr-prairie. gyr-saker. gyr-Peale's.

64mm:

Male: Gyrfalcon; Ferruginous Hawk.
Female: Western Red-tailed Hawk; Rough-legged Hawk. gyr-saker. gyr-Peale's.

65mm:

Male: Ferruginous Hawk.
Female: Gyrfalcon; Eastern Red-tailed Hawk; Rough-legged Hawk.

66mm:

Male: Ferruginous Hawk.
Female: Gyrfalcon; Eastern Red-tailed Hawk.