HOW TO OBSERVE THEM 187 



46. Greater Whitethroat and Lesser Whitethroat 



to show difference in size and shape. 



47. Curlew and Wild Duck 



to show pear-shape and roundish eggs. 



48. Dipper and Little Grebe 



to show difference in shape and cleanliness. 



49. Blackcap and Garden Warbler 



to show difference in markings, etc, 



50. Song Thrush and Mistle Thrush 



to show difference in size, shape, and markings. 



It is not necessary for anything further to be 

 written in this introductory section as to how to 

 observe birds, as the chapters which follow will 

 each afford some amount of information which 

 should be of some service. 



Suffice it to say, that the young ornithologist, 

 really desirous of acquiring a good knowledge of 

 our British birds, should be able, after some 

 practice, to identify a bird by its flight as well as 

 by its song; by its habits upon the ground as well 

 as by its nest; by its call, cry, or alarm notes as 

 well as by its size and plumage; and then, having 

 accomplished this, every country walk will be in 

 itself a scientific exhibition fraught with keen 

 enjoyment and unalloyed pleasure. 



II. BIRD-NESTING WITH A CAMERA 



It is a good plan for the young bird-nester with 

 a camera to make a beginning by firing some 



