16 REPORT ON THE MIGRATION OF BIRDS. 



March. — 7th, at Noss Head, Guillemots, " many more arrived 

 to-day, and all day;" and on 1st, " many arriving all day." 



April. — 3d, at Pentland Skerries, Puffins arrived during the 

 day, " earlier than last year by a week." [Note. — These arrival 

 dates of rock birds are always interesting, as also are their 

 movements at other times.] 



August. — Guillemots seen flying E. past Pentland Skerries on 

 4th August, and flocks again on 6th ; and by 19th, Puffins all 

 left, and last seen were on 15 th at that station. 



September. — One Black Guillemot seen on 17th at Pentland 

 Skerries ; fresh N.W., cloudy. 



December. — 16th, at N. Unst, two young Guillemots seen; 

 light S. breeze. 



