474 SCIENCE OF HOME AND COMMUNITY 



The association publishes a magazine, called Bird Lore, 

 which contains illustrated articles and notes on birds. A 

 large number of colored pictures and leaflets are published, 

 amounting to four million copies annually. These pictures 

 are sold for three cents each. 



During the past five or six years, a great work has been 

 done in schools through the organization of bird clubs 

 among the children. The work has grown in importance 

 each year, and during 1917 there were organized 11,935 

 classes, including 261,654 members. 



A number of lecturers, called field agents, are employed, 

 who devote their time to lecturing on birds and aiding the 

 work of the association in other ways. 



There are now state Audubon societies in thirty-seven 

 states and in the District of Columbia. These cooperate 

 with the national association, and also carry on other lines 

 of work independently. 



Bird protection by governments. Much progress has been 

 made in this country in protecting birds by state laws. 

 The tendency has always been to give more complete pro- 

 tection to birds in the enactment of these state laws. During 

 recent years the national government has taken important 

 steps to protect birds, recognizing the fact that since birds 

 migrate from one state to another, their protection is a 

 matter for the national government. 



In 1913 Congress passed the migratory bird law. In 

 accordance with this, all migratory birds that pass from one 

 state to another are given some degree of protection by the 

 national government. The exact regulations were worked 

 out by a committee of experts from the Bureau of Biological 

 Survey. These regulations are the most important scientific 

 document ever issued in the cause of bird protection. 



Migratory birds are first divided into two groups, the 

 insectivorous birds and the game birds. Insectivorous 

 birds are protected during all the year. Some game birds 



