THE ANIMAL KINGDOM. 



229 



selves with suspending them at the end of a palm-tree leaf 

 which just touches a sheet of water. Some birds only build 

 in the depth of caverns, or in the midst of ruins never 

 trodden by the foot of man ; to escape all notice is with 



116. The King Penguin: Aptenodytes Patagonica (Gmelin). 



them an .imperious necessity. On the contrary, there are 

 some which like to be near us. Quite assured of the affec- 

 tion we feel for them, and full of confidence, they enter our 

 dwellings as if they belonged to the household, and in spite 

 of the noise and uproar about them sleep peacefully in the 

 cradle they have hung there. 



The swallows seem to know instinctively that no person 



