Red-tailed hawk in tree. (Raptor009)
Ferruginous hawk at national wildlife reserve, Rocky Mountain Arsenal. (RMA022)
Northern harrier eggs in nest. (Raptor088)
Northern harrier flying. (Raptor7884)
Northern goshawk on rooftop. (Raptor8672)
Red-tailed hawk taking off. (061027-7171)
Red-tailed hawk perched on post. (111218-6035)
Northern harrier flying. (081115-4098)
Red-tailed hawk flying. (061027-7182)
Northern harrier landing on branch. (Raptor023)
Red-tailed hawk in flight. (120110-6068)
Northern harrier in flight. (Raptor7893)
Ferruginous hawk chicks in nest. (Raptor4190)
Northern harrier soaring. (Raptor024)
Flying northern harrier. (081115-4096)
Cooper's hawk perched in tree. (110302-2211)
Northern harrier portrait. (Raptor021)
Swainson's hawk on branch. (Raptor031)
Red-tailed hawk flying. (120110-6065)
Red-tailed hawk in flight. (101226-1398)
Ferruginous hawk landing on bush. (070212-9131)
Ferruginous hawk holding prairie dog kill. (Raptor106)
Northern harrier flying. (061204-7893)
Northern harrier in flight. (Raptor7098)
Red-tailed hawk in grass. (110215-2033)
Swainson's hawk on tree branch. (090428-5200)
Red-tailed hawk flying in winter. (061027-7178)
Ferruginous hawk holding kill. (Raptor036)
Northern harrier in flight. (081115-4093)
Ferruginous hawk flying. (Raptor032)
Red-tailed hawk in flight. (101218-1292)
Red-tailed hawk feeding on rabbit in winter. (Raptor098)
Red-tailed hawk in leaving barbed wire fence post. (101213-9506)
Red-tailed hawk gliding. (Raptor013)
Northern harrier flying. (061204-7884)
Red-tailed hawk on branch. (110215-2029)
Cooper's hawk perched on tree branch. (Raptor006)
Red-tailed hawk on fence post. (111218-6026)
Sharp-shinned hawk in tree. (070301-9372)
Ferruginous hawk chicks in nest. (Raptor4223)
Swainson's hawk taking off from tree branch. (090429-6160)
Red-tailed hawk flying over snow. (061027-7181)
Ferruginous hawk chicks in nest. (Raptor4207)
Red-tailed hawk in air. (111031-3946)
Red-tailed hawk flying towards perch. (110104-9651)
Swainson's hawk chicks in nest, Red Desert, Wyoming. (050629-2063)
Red-tailed hawk landing on roof vent. (101212-1265)
Red-tailed hawk taking off from fence post. (101213-9504)
Red-tailed hawk in flight. (101226-1397)
Flying northern harrier. (081115-4095)
Red-tailed hawk taking off from rooftop. (Raptor7219)
Northern goshawk flying. (Raptor8673)
Red-tailed hawk in snow. (061027-7170)
Swainson's hawk landing on blooming tree branch. (090429-6259)
Northern harrier landing. (081121-4125)
Red-tailed hawk perched on tree branch. (110123-1662)
Swainson's hawk on post. (Raptor002)
Red-tailed hawk, rufous morph. (111123-4143)
Northern goshawk on rail. (070119-8665)
Ferruginous hawks facing off. (Raptor103)
Red-tailed hawk on tree branch. (Raptor010)
Ferruginous hawk with prairie dog kill. (Raptor105)
Northern harrier stretching wing and leg. (Raptor7682)
Northern harrier feeding on mallard kill. (Raptor094)
Red-tailed hawk flying. (061128-7728)
Northern harrier perched on fence post. (061122-7689)
Swainson's hawk portrait. (Raptor028)
Red-tailed hawk in tree. (Raptor014)
Red-tailed hawk perched on fence post. (111218-6031)
Red-tailed hawk in flight. (101212-1264)
Rough-legged hawk on frosted branch. (Raptor029)
Red-tailed hawk in flight. (Raptor7728)
Swainson's hawk chicks in nest built on drilling structure, Red Desert, Wyoming. (050701-2252)
Ferruginous hawk chicks in nest. (Raptor4198)
Red-tailed hawk taking off from tree branch. (120110-6064)
Northern goshawk perched on rail. (070119-8667)
Ferruginous hawks at nest. (Raptor084)
Red-tailed hawk on fence post. (111218-6028)
Ferruginous hawk with prairie dog kill. (Raptor096)
Ferruginous hawk landing in bush. (070212-9133)
Red-tailed hawk flying. (061027-7180)
Red-tailed hawktaking off from tree. (Raptor7279)
Swainson's hawk in flight. (09429-6162)
American Kestrel perched on tree branch. (070118-8659)
Red-tailed hawk looking at foot. (111218-6032)
Swainson's hawk perched on tree branch. (080620-7036)
Red-tailed hawk wingspan. (110117-9682)
Ferruginous hawk with prairie dog kill. (Raptor097)
Ferruginous hawk confrontation. (Raptor022)
Rough-legged hawk portrait. (Raptor030)
Red-tailed hawk flying. (061027-7175)
Ferruginous hawk protecting kill as magpie looks on. (Raptor038)
Red-tailed hawk in flight. (Raptor7220)
Red-tailed hawk in flight. (120110-6066)
Ferruginous hawk nest with chicks. (Raptor4204)
Rough-legged hawk spreading wings. (091209-9473)
Northern harrier in flight. (081121-4127)
Red-tailed hawk flying. (101226-1395)
Northern harrier with kill. (Raptor093)
Sharp-shinned hawk in tree. (070301-9366)
Swainson's hawk perched on post. (Raptor104)
Swainson's hawk on fence. (Urban015)
Red-tailed hawk eating cottontail rabbit. (Raptor118)
Northern goshawk portrait. (Raptor025)
Ferruginous hawk nestlings. (Raptor4221)
Ferruginous hawk flying. (Raptor020)
Red-tailed hawk flying over snow. (061027-7174)
Red-tailed hawk in flight. (070218-0002)
Ferruginous hawk at nest. (Raptor5150)
Ferruginous hawk flying. (Raptor033)
Red-tailed hawk in flight. (120305-4467)
Ferruginous hawks with prairie dog kill. (Raptor107)
Ferruginous hawk at prairie dog burrow. (Raptor034)
Ferruginous hawk defending prairie dog kill from redtail hawk. (Raptor095)
Red-tailed hawk flying over snow. (Raptor7177)
Red-tailed hawk looking for prey. (110215-2036)
Sharp-shinned hawk portrait. (Raptor004)
