20 TALKS ABOUT BIRDS 



arise in the same way ; for instance, some 

 fowls and ducks now and then appear with 

 crests, and if the owner likes the look of them, 

 he will preserve the crested ones, and even 

 try to get them with as big crests as possible, 

 so that what we call a breed is formed. And 

 so things have gone on, till at last we have got 

 the great variety in our tame birds that we 

 see in a poultry show ; and there is no telling 

 when these changes will stop, as nowadays 

 we hear of a new breed of poultry almost 

 every year. 



