A B'IRDLOVER'S YEAR 



the autumn, so that we have the movements 

 of the thrush under eight different conditions 

 namely, those of 



(1) Residence. 



(2) Autumn emigration of British summer 

 visitors. 



(3) Autumn immigration and passage. 



(4) Autumn immigration from Western 

 Europe. 



(5) Winter movement. 



(6) Spring immigration of summer visitors. 



(7) Spring emigration of winter visitors. 



(8) Spring passage to Northern Europe. 

 First let us notice the autumn emigration 



of our British summer visitors. 



In certain districts resident thrushes are to 

 be found, but these birds are only a few of 

 many. At the approach of autumn a large 

 number of the birds which have bred with 

 us emigrate towards the south, the number 

 of departing birds increasing towards the 

 end of September. The thrushes travel in 

 company with other species which have also 

 passed the summer in the British Isles, and 

 the journey takes place at night. 



The next movement is the autumn im- 

 migration and passage of the song thrush, 



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