The following Ohfervations I received from Dr, Derham 

 after the Defcriptions were printed. 



DR. Derham hath obferved a conllderable Difference between the 

 Cock and Hen Cuckow (Plate VIII.) viz. The Head, Throat, 

 Neck and Back, as far as the Rump, in the Cock, is of a blewifh Lead 

 Colour, like the Neck of a Pigeon; but in the Hen of a darker Co- 

 lour, with a Dafh inclining to a reddifh Colour on the tips of the Neck 

 Feathers ; the Wings alfo of the Cock are of a bluer, the Hen of a brown- 

 er, or reddifh black Colour; the Bill and Eyes in the Cock are more 

 yellow ; for good Reafons he fufpedls them to feed alfo on Birds Eggs. 



Dr. Derham hath a Magpie (Plate XV.) above twenty Years old, and 

 is quite blind with Age ; it talks as well without cutting of the 

 Tongue, as any whofe Tongues are cut. 



He hath obferved the Cock Jay (Plate XVI.) to be fomewhat bigger 

 than the Hen, the Feathers on the Head to be blacker, the Stripes 

 longer, and the black and blue Colours more elegant in the Cock 

 than in the Hen. 



Alfo he hath obferved the Lift on the Back of the Hen Wryneck 

 (Plate XXI.) to reach along the Neck, almoft to the very Bill ; but in 

 the Cock to run no farther than to the upper part of the Neck. 



Alfo he obferved the Cock's Belly to be naked, as the Hen's that fits ; 

 whence he concludes that it takes its turn in Incubation. 



He hath obferved the Pippit (Plate XLIV.) to frequent Heaths, and 

 Plains, and iings by flying up in the Air, not high, and again down to 

 the Ground, or on a low Bufh, after the manner that the Tit-Lark doth 

 on a Tree. 



Alfo he hath obferved the Cock Ox-Eye Titmoufe (Plate XLVI.) to 

 be fomewhat bigger than the Hen ; the black Lift on the Breaft and 

 Belly of the Cock to be fomewhat broader and more illuftrious. 



C c Alfo 



