Men work on a raised section of the Standard Gauge Railway in Voi, Kenya on March 15, 2016. The first stage of the planned Standard Gauge railway stretches from Mombasa to Nairobi and will eventually connect Kenya with Uganda, Rwanda, and South Sudan. Sections of the railway run through protected land, including Nairobi National Park and the Tsavo National Parks, which may create problems for the wildlife living there.

Men work on a raised section of the Standard Gauge Railway in Voi, Kenya on March 15, 2016. The first stage of the planned Standard Gauge railway stretches from Mombasa to Nairobi and will eventually connect Kenya with Uganda, Rwanda, and South Sudan. Sections of the railway run through protected land, including Nairobi National Park and the Tsavo National Parks, which may create problems for the wildlife living there.

 A male and female White rhino graze inside Nairobi National Park in Nairobi, Kenya on March 20, 2016. The 117 sq. kilometer park is Kenya's first established national park, and contains over 400 species of wildlife. The park is the only national park in the world located inside a capital city. Fear has been raised that as as Kenya races to modernize its colonial-era infrastructure, wildlife may be affected.  

A male and female White rhino graze inside Nairobi National Park in Nairobi, Kenya on March 20, 2016. The 117 sq. kilometer park is Kenya's first established national park, and contains over 400 species of wildlife. The park is the only national park in the world located inside a capital city. Fear has been raised that as as Kenya races to modernize its colonial-era infrastructure, wildlife may be affected.
 

 Rangers from the Kenya Wildlife Service pray before an elephant collaring operation in Tsavo West National Park in Kenya on March 14, 2016. The team starts each day of the operation with a prayer. The goal of the multi-day operation was to see how elephants interact with the newly built Standard Gauge Railway which runs through the Tsavo Parks.

Rangers from the Kenya Wildlife Service pray before an elephant collaring operation in Tsavo West National Park in Kenya on March 14, 2016. The team starts each day of the operation with a prayer. The goal of the multi-day operation was to see how elephants interact with the newly built Standard Gauge Railway which runs through the Tsavo Parks.

 Rangers from the Kenya Wildlife Service keep watch after the collaring caravan stopped on Voi-Taveta Road to wait for an elephant to be darted in Tsavo West National Park in Kenya on March 15, 2016. 

Rangers from the Kenya Wildlife Service keep watch after the collaring caravan stopped on Voi-Taveta Road to wait for an elephant to be darted in Tsavo West National Park in Kenya on March 15, 2016. 

 Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, begin the collaring process  of a 25-year-old male Savanna elephant in the Maktau area of Tsavo West National Park in Kenya on March 15, 2016. The team also checks the elephant's health and takes measurements and photographs.

Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, begin the collaring process  of a 25-year-old male Savanna elephant in the Maktau area of Tsavo West National Park in Kenya on March 15, 2016. The team also checks the elephant's health and takes measurements and photographs.

 An unfinished section of the Standard Gauge Railway which runs through in the Bachuma area of Tsavo East National Park in Kenya on March 16, 2016. The railway splits the park into two sides, and has been nicknamed "The Great Wall of Tsavo".

An unfinished section of the Standard Gauge Railway which runs through in the Bachuma area of Tsavo East National Park in Kenya on March 16, 2016. The railway splits the park into two sides, and has been nicknamed "The Great Wall of Tsavo".

 David Daballen, a field operations employee of the Kenya based NGO, Save The Elephants, tests the signal of an elephant collar prior to an elephant collaring operation in the Tsavo National Parks in Kenya on March 15, 2016. The collars are fitted with satellite radio technology which can track the elephant's location, providing critical data to understand the elephant's interaction with infrastructure development in the parks.

David Daballen, a field operations employee of the Kenya based NGO, Save The Elephants, tests the signal of an elephant collar prior to an elephant collaring operation in the Tsavo National Parks in Kenya on March 15, 2016. The collars are fitted with satellite radio technology which can track the elephant's location, providing critical data to understand the elephant's interaction with infrastructure development in the parks.

 A caravan of the collaring team comprised of members of the Kenya Wildlife Service, and Kenya Based NGOs Save The Elephants and the Tsavo Trust, moves to a location where an elephant was spotted in Tsavo West National Park in Kenya on March 15, 2016. The caravan of four wheel drive vehicles coordinates with a helicopter and airplane to pinpoint elephant locations and to determine when to approach the sedated elephant after it is darted by a veterinarian in the helicopter.

A caravan of the collaring team comprised of members of the Kenya Wildlife Service, and Kenya Based NGOs Save The Elephants and the Tsavo Trust, moves to a location where an elephant was spotted in Tsavo West National Park in Kenya on March 15, 2016. The caravan of four wheel drive vehicles coordinates with a helicopter and airplane to pinpoint elephant locations and to determine when to approach the sedated elephant after it is darted by a veterinarian in the helicopter.

 Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, work on the collaring of a 25-year-old male Savanna elephant in the Ngara area of Tsavo East National Park in Kenya on March 15, 2016. 

Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, work on the collaring of a 25-year-old male Savanna elephant in the Ngara area of Tsavo East National Park in Kenya on March 15, 2016. 

 Members of the collaring team take pictures of the trunk of an 18-year-old female Savanna elephant in the Murka  area of Tsavo West National Park in Kenya on March 15, 2016.

Members of the collaring team take pictures of the trunk of an 18-year-old female Savanna elephant in the Murka  area of Tsavo West National Park in Kenya on March 15, 2016.

 Members of the collaring team chase away a male calf after it's mother was darted to be collared in the Murka area of Tsavo West National Park in Kenya on March 15, 2016. 

Members of the collaring team chase away a male calf after it's mother was darted to be collared in the Murka area of Tsavo West National Park in Kenya on March 15, 2016. 

 Dr. Ben Okita, Head of Research Operations of Kenya based NGO, Save The Elephants, points out locations where an elephant collaring operation will take place throughout the Tsavo National Parks in Kenya on March 15, 2016. 

Dr. Ben Okita, Head of Research Operations of Kenya based NGO, Save The Elephants, points out locations where an elephant collaring operation will take place throughout the Tsavo National Parks in Kenya on March 15, 2016. 

 Workers for the China Road and Bridge Corporation build the beginning of a bridge for the Standard Gauge Railway that will lead into the eastern border of Nairobi National Park in Nairobi, Kenya on March 20, 2016. The new railway runs in and out of the park and will affect 216 acres.

Workers for the China Road and Bridge Corporation build the beginning of a bridge for the Standard Gauge Railway that will lead into the eastern border of Nairobi National Park in Nairobi, Kenya on March 20, 2016. The new railway runs in and out of the park and will affect 216 acres.

 Workers for the China Road and Bridge Corporation move stones for the construction of the new Standard Gauge Railway just outside the eastern fence line of Nairobi National Park in Nairobi, Kenya on March 20, 2016.

Workers for the China Road and Bridge Corporation move stones for the construction of the new Standard Gauge Railway just outside the eastern fence line of Nairobi National Park in Nairobi, Kenya on March 20, 2016.

 Members of the collaring team prepare to return to base after collaring two elephants in Tsavo West National Park in Kenya on March 15, 2016.

Members of the collaring team prepare to return to base after collaring two elephants in Tsavo West National Park in Kenya on March 15, 2016.

 Members of the Kenya based NGO, Save The Elephants, walk from a Kenya Wildlife Service helicopter before an afternoon collaring operation in the Ndara area of Tsavo East National Park in Kenya on March 15, 2016. 

Members of the Kenya based NGO, Save The Elephants, walk from a Kenya Wildlife Service helicopter before an afternoon collaring operation in the Ndara area of Tsavo East National Park in Kenya on March 15, 2016. 

 Kenya Wildlife Services field veterinarian, Dr. Dominic Mijele, injects an anti-serum into a 18-year-old female Savanna elephant to wake her from sedation in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016.

Kenya Wildlife Services field veterinarian, Dr. Dominic Mijele, injects an anti-serum into a 18-year-old female Savanna elephant to wake her from sedation in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016.

 Men work work on a section of the Standard Gauge Railway that runs through the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. Approximately 12,000 elephants live in the Tsavo Conservation area according to a 2012 census. 

Men work work on a section of the Standard Gauge Railway that runs through the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. Approximately 12,000 elephants live in the Tsavo Conservation area according to a 2012 census. 

 Boys play on an unfinished section of the Standard Gauge Railway which runs through in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. 

Boys play on an unfinished section of the Standard Gauge Railway which runs through in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. 

 Men work on a raised section of the Standard Gauge Railway in Voi, Kenya on March 15, 2016. The first stage of the planned Standard Gauge railway stretches from Mombasa to Nairobi and will eventually connect Kenya with Uganda, Rwanda, and South Sudan. Sections of the railway run through protected land, including Nairobi National Park and the Tsavo National Parks, which may create problems for the wildlife living there.
 A male and female White rhino graze inside Nairobi National Park in Nairobi, Kenya on March 20, 2016. The 117 sq. kilometer park is Kenya's first established national park, and contains over 400 species of wildlife. The park is the only national park in the world located inside a capital city. Fear has been raised that as as Kenya races to modernize its colonial-era infrastructure, wildlife may be affected.  
 Rangers from the Kenya Wildlife Service pray before an elephant collaring operation in Tsavo West National Park in Kenya on March 14, 2016. The team starts each day of the operation with a prayer. The goal of the multi-day operation was to see how elephants interact with the newly built Standard Gauge Railway which runs through the Tsavo Parks.
 Rangers from the Kenya Wildlife Service keep watch after the collaring caravan stopped on Voi-Taveta Road to wait for an elephant to be darted in Tsavo West National Park in Kenya on March 15, 2016. 
 Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, begin the collaring process  of a 25-year-old male Savanna elephant in the Maktau area of Tsavo West National Park in Kenya on March 15, 2016. The team also checks the elephant's health and takes measurements and photographs.
 An unfinished section of the Standard Gauge Railway which runs through in the Bachuma area of Tsavo East National Park in Kenya on March 16, 2016. The railway splits the park into two sides, and has been nicknamed "The Great Wall of Tsavo".
 David Daballen, a field operations employee of the Kenya based NGO, Save The Elephants, tests the signal of an elephant collar prior to an elephant collaring operation in the Tsavo National Parks in Kenya on March 15, 2016. The collars are fitted with satellite radio technology which can track the elephant's location, providing critical data to understand the elephant's interaction with infrastructure development in the parks.
 A caravan of the collaring team comprised of members of the Kenya Wildlife Service, and Kenya Based NGOs Save The Elephants and the Tsavo Trust, moves to a location where an elephant was spotted in Tsavo West National Park in Kenya on March 15, 2016. The caravan of four wheel drive vehicles coordinates with a helicopter and airplane to pinpoint elephant locations and to determine when to approach the sedated elephant after it is darted by a veterinarian in the helicopter.
 Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, work on the collaring of a 25-year-old male Savanna elephant in the Ngara area of Tsavo East National Park in Kenya on March 15, 2016. 
 Members of the collaring team take pictures of the trunk of an 18-year-old female Savanna elephant in the Murka  area of Tsavo West National Park in Kenya on March 15, 2016.
 Members of the collaring team chase away a male calf after it's mother was darted to be collared in the Murka area of Tsavo West National Park in Kenya on March 15, 2016. 
 Dr. Ben Okita, Head of Research Operations of Kenya based NGO, Save The Elephants, points out locations where an elephant collaring operation will take place throughout the Tsavo National Parks in Kenya on March 15, 2016. 
 Workers for the China Road and Bridge Corporation build the beginning of a bridge for the Standard Gauge Railway that will lead into the eastern border of Nairobi National Park in Nairobi, Kenya on March 20, 2016. The new railway runs in and out of the park and will affect 216 acres.
 Workers for the China Road and Bridge Corporation move stones for the construction of the new Standard Gauge Railway just outside the eastern fence line of Nairobi National Park in Nairobi, Kenya on March 20, 2016.
 Members of the collaring team prepare to return to base after collaring two elephants in Tsavo West National Park in Kenya on March 15, 2016.
 Members of the Kenya based NGO, Save The Elephants, walk from a Kenya Wildlife Service helicopter before an afternoon collaring operation in the Ndara area of Tsavo East National Park in Kenya on March 15, 2016. 
 Kenya Wildlife Services field veterinarian, Dr. Dominic Mijele, injects an anti-serum into a 18-year-old female Savanna elephant to wake her from sedation in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016.
 Men work work on a section of the Standard Gauge Railway that runs through the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. Approximately 12,000 elephants live in the Tsavo Conservation area according to a 2012 census. 
 Boys play on an unfinished section of the Standard Gauge Railway which runs through in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. 

Men work on a raised section of the Standard Gauge Railway in Voi, Kenya on March 15, 2016. The first stage of the planned Standard Gauge railway stretches from Mombasa to Nairobi and will eventually connect Kenya with Uganda, Rwanda, and South Sudan. Sections of the railway run through protected land, including Nairobi National Park and the Tsavo National Parks, which may create problems for the wildlife living there.

A male and female White rhino graze inside Nairobi National Park in Nairobi, Kenya on March 20, 2016. The 117 sq. kilometer park is Kenya's first established national park, and contains over 400 species of wildlife. The park is the only national park in the world located inside a capital city. Fear has been raised that as as Kenya races to modernize its colonial-era infrastructure, wildlife may be affected.
 

Rangers from the Kenya Wildlife Service pray before an elephant collaring operation in Tsavo West National Park in Kenya on March 14, 2016. The team starts each day of the operation with a prayer. The goal of the multi-day operation was to see how elephants interact with the newly built Standard Gauge Railway which runs through the Tsavo Parks.

Rangers from the Kenya Wildlife Service keep watch after the collaring caravan stopped on Voi-Taveta Road to wait for an elephant to be darted in Tsavo West National Park in Kenya on March 15, 2016. 

Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, begin the collaring process  of a 25-year-old male Savanna elephant in the Maktau area of Tsavo West National Park in Kenya on March 15, 2016. The team also checks the elephant's health and takes measurements and photographs.

An unfinished section of the Standard Gauge Railway which runs through in the Bachuma area of Tsavo East National Park in Kenya on March 16, 2016. The railway splits the park into two sides, and has been nicknamed "The Great Wall of Tsavo".

David Daballen, a field operations employee of the Kenya based NGO, Save The Elephants, tests the signal of an elephant collar prior to an elephant collaring operation in the Tsavo National Parks in Kenya on March 15, 2016. The collars are fitted with satellite radio technology which can track the elephant's location, providing critical data to understand the elephant's interaction with infrastructure development in the parks.

A caravan of the collaring team comprised of members of the Kenya Wildlife Service, and Kenya Based NGOs Save The Elephants and the Tsavo Trust, moves to a location where an elephant was spotted in Tsavo West National Park in Kenya on March 15, 2016. The caravan of four wheel drive vehicles coordinates with a helicopter and airplane to pinpoint elephant locations and to determine when to approach the sedated elephant after it is darted by a veterinarian in the helicopter.

Members of the collaring team, comprised of the Kenya Wildlife Service and Kenya based NGOs, Save The Elephants and the Tsavo Trust, work on the collaring of a 25-year-old male Savanna elephant in the Ngara area of Tsavo East National Park in Kenya on March 15, 2016. 

Members of the collaring team take pictures of the trunk of an 18-year-old female Savanna elephant in the Murka  area of Tsavo West National Park in Kenya on March 15, 2016.

Members of the collaring team chase away a male calf after it's mother was darted to be collared in the Murka area of Tsavo West National Park in Kenya on March 15, 2016. 

Dr. Ben Okita, Head of Research Operations of Kenya based NGO, Save The Elephants, points out locations where an elephant collaring operation will take place throughout the Tsavo National Parks in Kenya on March 15, 2016. 

Workers for the China Road and Bridge Corporation build the beginning of a bridge for the Standard Gauge Railway that will lead into the eastern border of Nairobi National Park in Nairobi, Kenya on March 20, 2016. The new railway runs in and out of the park and will affect 216 acres.

Workers for the China Road and Bridge Corporation move stones for the construction of the new Standard Gauge Railway just outside the eastern fence line of Nairobi National Park in Nairobi, Kenya on March 20, 2016.

Members of the collaring team prepare to return to base after collaring two elephants in Tsavo West National Park in Kenya on March 15, 2016.

Members of the Kenya based NGO, Save The Elephants, walk from a Kenya Wildlife Service helicopter before an afternoon collaring operation in the Ndara area of Tsavo East National Park in Kenya on March 15, 2016. 

Kenya Wildlife Services field veterinarian, Dr. Dominic Mijele, injects an anti-serum into a 18-year-old female Savanna elephant to wake her from sedation in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016.

Men work work on a section of the Standard Gauge Railway that runs through the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. Approximately 12,000 elephants live in the Tsavo Conservation area according to a 2012 census. 

Boys play on an unfinished section of the Standard Gauge Railway which runs through in the Maungu area of Tsavo East National Park in Kenya on March 15, 2016. 

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