FOR NORTHERN INDIA 43 



which finds the climate of the United 

 Provinces too severe for it in winter ; the 

 koel and the paradise flycatcher likewise desert 

 us in the coldest months. From the less 

 temperate Punjab several species migrate in 

 October which manage to maintain them- 

 selves in the United Provinces throughout the 

 year : these are the purple sunbird, the little 

 green and the blue-tailed bee-eaters, and the 

 yellow-throated sparrow. The return of these 

 and the other migrant species to the Punjab in 

 March is as marked a phenomenon as is the 

 arrival of the swallow and the cuckoo in 

 England in spring. 



The behaviour of the king-screws shows the 

 marked effect a comparatively small difference 

 of temperature may exert on the habits of 

 some birds. In the United Provinces the king- 

 crows appear to be as numerous in winter as 

 in summer : in the Punjab they are very 

 plentiful in summer, but rare in the cold 

 weather ; while not a single king-crow winters 

 in the N.-W. Frontier Province. 



Of the birds of which the nests were 

 described in January and February the Pallas's 

 fishing eagles have sent their nestlings into the 

 world to fend for themselves. 



