I04 



THE NATURAL HISTORY 



birds (singing birds strictly so called) as continue in full 

 song till after Midsummer ; and shall range them some- 

 what in the order in which they first begin to open as the 

 spring advances. 



RAII NOMINA. 



In January, and continues to 

 sing through all the sum- 

 mer and autumn. 



In February and on to 

 August, reassume their 

 song in autumn. 



All the year, hard frost ex- 

 cepted. 



Ditto. 



Early in February to July 

 the loth. 



Early in February, and on 

 through July to August 

 the 2 1 St. 



In February, and on to 

 October. 



From April to September. 



Beginning of April to July 

 13th. 



From middle of April to 

 July the 1 6th. 



Sometimes in February and 

 March, and so on to July 

 the twenty-third ; reas- 

 sumes in autumn. 



In April and on to July 23. 



April and through to Sep- 

 tember 16. 



On to July and August 2. 



May, on to beginning of 

 July. 



Breeds and whistles on till 

 August ; reassumes its note 

 when they begin to con- 

 gregate in October, and 

 again early before the flock 

 separate. 



Birds that cease to be in full song, and are usually silent 

 at or before Midsummer : 



17- 



Middle willow- 

 wren. 



Regulus non cristatus. 



Middle of June ; begins in 

 April. 



