94 CONTROLLED NATURAL SELECTION 



coloured parents and protectively coloured 

 young are to be found widely distributed in 

 the animal kingdom. In fact, it is exceptional 

 to find parents, bringing up young, which do 

 not show this difference in colour or other 

 character. Thus are brought together the 

 three factors with which Controlled Natural 

 Selection can work : 



(1) A society of animals 



(2) Of different value, and 



(3) Having different characters. 



During Natural Selection the less valuable 

 and conspicuous parents will be taken, at the 

 saving of the more valuable and inconspicuous 

 young. The predatory animal will take the 

 conspicuous parents that it can best see, and 

 leave the young that are only seen with 

 difficulty. 



When dealing with Parental Instincts, men- 

 tion was made of the displays of colour that 

 are made by the parent when the family is 

 attacked; they will show their brightest plumes 

 to the enemy and endeavour to draw its 

 attack ; they will display bright colours which 

 are otherwise concealed in wings and tail (see 

 Concealed Conspicuous Colours, Chapter III). 



Predatory animals, because they have no 

 enemies, should not present conspicuous colour- 



