LIST OF ILLUSTRATIONS. 



PAGE 



Nest and Eggs of the Bittern. {Photographed 



by Emma L. Turner) . . . . . . . . 7 



Young Bitterns " On the Defensive." {Photographed 



by Emma L. Turner) Plate i . . . . facing 8 



Nestling Bittern about two days old. Eldest of 

 three Hatched Out. {Photographed by Emma 

 L. Turner) . . . . . . . . . . . . 10 



Young Bitterns 7-10 days old. {Photographed by 



Emma L. Turner) . . . . . . . . . . 11 



Frontispiece of the Ashburnham Pamphlet . . 16 



The Seventh Illustration of " Avis Pugnax " in 



Aldrovandus . . . . . . . . . . 17 



Pied Wagtails {MotaciUa a. lugubris) and White 

 Wagtails {M. a. alba) in various plumages to 

 show differences and similarities. Plate 2 facing yj 



Bardsey Island. East Bay and Lighthouse Plateau. 



{Photographed by N. F. Ticehurst) . . . . . . 43 



Bardsey Island. East Coast Cliffs. {Photographed 



by N. F. Ticehurst) . . . . . . . . . . 45 



Herring-Gulls following the Plough, Bardsey Island. 



{Photographed fry N. F. Ticehurst) . . . . . . 49 



The Late Dr. J. Wiglesworth . . . . . . . . 53 



Migration Routes, Bardsey Island . . . . . . 69 



Carrion-Crow {Corvus c. corone) — 3 days old . . 78 



5parrow-Hawk : Preening. {Photographed by J. H. 



Owen) . . . . . . . . . . . . . . 119 



Sparrow-Hawk : Making the body into a sun-screen. 



{Photographed by J. H. Owen) . . . . . . 121 



Sparrow-Hawk : She turned her back to the sun, 

 and, in turns, the young made use of her shadow. 

 {Photographed by J. H. Owen) . . . . . . 122 



5parrow-Hawk : The young panting and lying 

 exhausted with necks outstretched. {Photo- 

 graphed by J. H. Owen) . . . . . . . . 123 



Young Buzzard takes a Shower Bath. {Photo- 

 graphed by T. Lewis) . . . . . . . . 140 



Long-tailed Skua. {Photographed by O. G. Pike) 143 



Black-necked Grebe. {Photographed by O. G. 



Pike). The Nest uncovered .. .. .. 148 



Arriving at the Nest : Plate 3. Uncovering the 

 Eggs : Plate 4. On the alert, watching for the 



