Proc. R.I.Acad., Vol. XXXI. 



Part 20, Platk V. 



Fig. 1. — Portion of great north-western cliff, 



Clare Island. 



Razorbills and Puffins nesting. 



C.J. Patten, photo. 



Fig. 2.— Doonbristy (the Broken Fort), 



North Mayo coast. 



Great Black-backed Gulls nest on top, 



Guillemots and Kittiwakes on the ledges. 



T. J. Westropp, pJwto. 



Fig. 3.— Young Great Black-backed Gulls 

 on the Bills. 



R. Welch, photo. 



Fig. 4. — Blackbird's nest on a rock, 

 Clare Island. 



C.J. Patten, photo. 



Clare island Survey.— Ussher : Aves. 



