Keyword: great migration
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ANI082-00120
Millions of monarch butterflies (Danaus plexippus) roost on the Sierra Chincua (Chincua mountain) near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle: already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-00121
Millions of monarch butterflies (Danaus plexippus) roost on the Sierra Chincua (Chincua mountain) near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle: already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-00122
Joel Sartore on assignment at Sierra Chincua in Mexico, home to the world’s largest gathering of monarch butterflies.
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ANI082-00107
A coyote (Canis latrans) walking along a barbed wire fence near Medicine Hat, Alberta, Canada.
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ANI082-00123
Logging has taken its toll on a former wintering roost for monarch butterflies near Angangueo, Mexico.
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ANI082-00108
A pronghorn (Antilocapra americana) crossing under a fence near Medicine Hat, Alberta, Canada.
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ANI082-00124
Logging has taken its toll on a former wintering roost for monarch butterflies near Angangueo, Mexico.
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ANI082-00125
Logging has taken its toll on a former wintering roost for monarch butterflies near Angangueo, Mexico.
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ANI082-00110
A pronghorn (Antilocapra americana) crossing under a fence near Medicine Hat, Alberta, Canada.
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ANI082-00111
Millions of monarch butterflies (Danaus plexippus) roost on the Sierra Chincua (Chincua mountain) near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle: already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-00112
Millions of monarch butterflies (Danaus plexippus) roost on the Sierra Chincua (Chincua mountain) near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle: already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-00113
Millions of monarch butterflies (Danaus plexippus) roost on the Sierra Chincua (Chincua mountain) near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle: already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-00114
Monarchs (Danaus plexippus) in the Sierra Chincua sanctuary, Mexico.
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ANI082-00099
Biologists collect samples from a vulnerable (IUCN) and federally threatened bull trout (Salvelinus confluentus) Clark Fork River, Idaho.
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ANI082-00100
The Thompson Falls dam, which is currently starting construction to build a fish passage system on the Clark Fork river in Thompson Falls, Montana. Shown is the road way being constructed on the downstream side that will be used to transport heavy machinery.
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ANI082-00101
A fisheries technician for dam owner Avista, uses a radio antenna to track tagged bull trout in a stream that feeds into Noxon Reservoir. Biologists track a handful of tagged fish daily to try and learn about their migratory movements, which a series of dams on the nearby Clark Fork River have severely impeded.
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ANI082-00102
A fisheries technician for Avista, checks a monitoring station for radio-tagged bull trout (Salvelinus confluentus) at the base of Noxon Rapids Dam, Montana. (US: Federally threatened; IUCN: Vulnerable)
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ANI082-00103
An aerial of the Bowden natural gas drilling area along the MIlk river northeast of Malta, Montana.
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ANI082-00104
Aerial of the Bowdoin natural gas drilling area northeast of Malta, Montana.
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ANI082-00105
An ocelot (Leopardus pardalis) photographed with a camera trap in Laguna Atascosa National Wildlife Refuge in Texas.
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ANI082-00089
Hungry Horse Dam, one of the biggest dams that blocks bull trout movements in Northern Montana. Note that biologists say this dam actually prevents non-native fish from moving upstream here, which today is a good thing. No fish ladder or passages were incorporated into this or any other dam in this region at the time they were built.
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ANI082-00106
A bobcat (Lynx rufus) traverses along the Mexican-Texas border. A border wall along the lower Rio Grande in Texas divides nations as well as habitats, hindering daily essential movements of animals in the area. Bobcats would normally cross the border to find mates or catch dinner. The wall also blocks the dailly rounds of ocelots, another member of the cat family. Photograph by Joel Sartore with Mitch Sternberg, Jennifer Lowry, and Naghma Malik, all U.S. Fish and Wildlife Service.
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ANI082-00090
A bull trout (Salvelinus confluentus) in Bighorn Creek which is part of the Kootenay river system in British Columbia, Canada. (IUCN: Vulnerable; US: Federally threatened)
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ANI082-00092
A bull trout (Salvelinus confluentus) in Bighorn Creek which is part of the Kootenay river system in British Columbia, Canada. (IUCN: Vulnerable; US: Federally threatened)
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ANI082-00093
Bull trout (Salvelinus confluentus) swimming in the Bighorn Creek, in the Wigwam River drainage in British Columbia. This is one of the last, best places for spawning of the vulnerable (ICUN) and federally-threatened bull trout, and is part of the Kootenay River system, which sees an annual migration of bull trout from Lake Koocanusa, some fifty miles away. The fish prefer very cold water of 40 degrees or so in order to spawn, and the springs in this area provide that.
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ANI082-00094
A group of fisherman cleaning lake trout (Salvelinus namaycush) at Lake Pend Oreille, Idaho.
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ANI082-00095
A group of fisherman cleaning lake trout (Salvelinus namaycush) at Lake Pend Oreille, Idaho.
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ANI082-00096
Bull trout (Salvelinus confluentus) caught in fishing nets in Lake Pend Oreille, Idaho. (IUCN: Vulnerable; US: Federally threatened)
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ANI082-00097
A lake trout (Salvelinus namaycush) caught in a net by fishermen in Lake Pend Oreille, Idaho.
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ANI082-00098
Two biologists fish the Noxon Rapids Dam, Montana.
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ANI082-00082
A mountain goat (Oreamnos americanus) in Glacier National Park, Montana.
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ANI082-00083
A mountain goat (Oreamnos americanus) in Glacier National Park, Montana.
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ANI082-00084
A mother mountain goat (Oreamnos americanus) and her baby walk down a rocky path in Glacier National Park, Montana.
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ANI082-00085
Joel Sartore and his son, Cole, stop to take a photograph together in the Walton area of Glacier National Park, Montana.
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ANI082-00069
Red-headed woodpeckers (Melanerpes erythrocephalus) feed their young high in the forest canopy at Spring Creek Prairie near Denton, Nebraska.
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ANI082-00086
A bobcat (Lynx rufus) photographed by a camera trap along the Tex-Mex border wall. The border wall cuts through many places of the last habitat left along the lower Rio Grande river, the wall is a huge impediment to the movement of wildlife species that can’t fly over it.
