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How to Sex Cage Birds. 



Long-Tailed Tit 

 (Acredula caudata). 



In the female the black stripe 

 from eye to nape is broader than 

 in the male ; no other difference 

 in the plumage has been re- 

 corded. 



Great Tit (Parus major). 



The female is duller in colour- 

 ing than the male, the longi- 

 tudinal black ventral stripe 

 decidedly narrower. 



The Coal-Tit (Parus ater). 



The female is not so brightly 

 coloured as the male, and the 

 white patches on face and nape 

 are suffused with yellow. 



The Marsh-Tit (Parus palustris). 



LONG-TAILED TIT. 



The sexes scarcely differ in 

 plumage ; perhaps the black cap is slightly duller, but even this 

 may be a matter of age rather than s< 



The Blue-Tit (Parus cceruleus). 



The hen is duller in colouring 

 than the cock, with somewhat ashy 

 cheeks, and the yellow of the under 

 parts suffused with olive-greenish. 



The Crested Tit (Parus cristatus). i 



The crest is shorter and the black 

 throat-patch more restricted in the 

 hen bird. 



The Nuthatches (Sittidas). 



In these birds the bill of the adult 

 hen is longer and more slender than 

 that of the cock ; the lower margin 

 of the bill is straighter, not bent 

 abruptly upwards from the middle 

 as in the cock bird. 



TIIK GREAT TIT. 



