This page summarizes graphically some of their work and
explains what are conservation drones, when to use them and typical
conservation missions. 
For the interested readers, I put the corresponding chapter from their book [
1 ]. 
1  Conservation drones?“Conservation drones
are low-cost, autonomous, and operator-friendly unmanned aerial vehicles
 that can be used for surveying, mapping, and monitoring both habitat
and biodiversity”, back cover of [
1 ].
This 
page  (of conservation drone website) gives a list of commercial drones that have been used for conservation missions.
2  Examples of conservation missions for drones(Chapters 4, 5 and 6 of [
1 ])
  
    
     
    
  
    
     
    
  
    
     
    
  
    
     
    
 
3  Steps before flying conservation drones3.1  Consider if it is worth using drones.Could the conservation mission be done with alternative technology:
  
    
     
    
  
    
     
    
  
    
     
    
  
    
     
    
 
3.2  Choose a type of drone
Some examples of drones:
  
    
     
    
  
    
     
    
  
    
     
    
  
    
     
    
 
3.3  Check important parameters before the flights
Some examples of important parameters:
  
    
     
    
  
    
     
    
  
    
     
    
  
    
     
    
  
    
     
    
 
4  Some conservation projects using drones 
  VIDEO 
  VIDEO 
  VIDEO 
  
A 
UDS  (UavDroneSolutions) company conservation project.
 
VIDEO 
Networking Environmental RObotics 
Sun2ice: when solar drones meet Arctic glaciers VIDEO 
References 1 Wich, Serge A and Koh, Lian Pin , Conservation drones: mapping and monitoring biodiversity Oxford University Press , 2018 ).