420 A CORNISH FAUNA. 



Little Grull, Z. minutm ; rarely met with, but specimens in adult 

 and immature plumage have been obtained at Penzance and 

 the Land's- end, — the latter in the month of December, 

 1844. 



Black-headed Gull, Z. ridihundus ; not uncommon on the sands 

 at Hayle and elsewhere, in winter. 



Kittiwake Grull, Z. tridactylus ; common on our coasts generally- 

 Ivory Grull, Z. ehurnetis ; very rare : the only recorded example 

 of this bird in Cornwall was captured off the pier at Pen- 

 zance, in the month of February, 1847. 



Common Gull, Z. canus ; generally distributed in more or less 

 numbers along our coasts. 



Bonapartian Gull, Z. Bon (See Yarrell's 2nd " Supplement," p. 

 55) ; an immature specimen killed in Falmouth harbour, in 

 June, 1865. 



Lesser Black -backed Gull, Z. fuscus ; generally distributed, with 

 the herring gulls, in large numbers on our flat sands and 

 open estuaries. 



Herring Gull, Z. argentahis ; the most common gull on our coast, 

 and generally distributed in estuaries, creeks, open sands, 

 and precipitous cliffs. 



Great Black-backed Gull, Z. marinus ; one or two may be seen, 

 at all times and seasons, in different localities along our 

 coast. 



Glaucus Gull, Z. glaums ; occasionally observed, but by no means 

 regularly or frequently. 



Iceland Gull, Z. islandicus ; rare. A specimen of the Iceland 

 gull in the state of plumage almost amounting to pure- 

 white, obtained from Scilly. 



Common Skua, Lestris catarractes ; rarely met with in the western 

 counties : observed at the WoK rock in considerable num- 

 bers in 1863. 



Pomerine Skua, S. pomarinus ; occasionally, and at uncertain 

 intervals, occurring on our coast, and in every instance in 

 immature plumage. 



Eichardson's Skua, Z. Richardsonii ; rarely observed on our 

 coast, and more rarely in adult plumage. 



Buff on' s Skua, Z. parasiticus ; very rare : a specimen found in- 

 land in the parish of St. Buryan, in adult plumage. 



