ig. A Western Diamond-back Rattlesnake, one of the Pit- Vipers, showing the sensory pit in 

 front of and below the eye. The pit contains receptor organs sensitive to the infra-red 

 radiation given off by the bodies of the small mammals on which it preys. (Page 216) 



20. The Manx Shearwater that homed over the Atlantic from America to Wales in 12 days, 

 12 hours, and 31 minutes, across at least 3,200 miles of ocean. It was released hundreds of 

 miles out of its normal range in a place it had never seen before. (Page 226) 





