BOB INS ON MIGBATION. 9 



it was a Robin. It came up to the glass, but soon it departed 

 to return no more. It may, however, have been a Stone- 

 chat, a bird with somewhat the same form and flight. I surmise 

 this because I observed and collected a female Stonechat at 

 6.10 the next morning. Wheatears, Swallows, and Greater 

 Whitethroats appeared this night, and I collected examples 

 of the last-named species. The night was very calm, the sky 

 dark and overcast, the wind west, but the atmosphere was so 

 exceptionally clear that from the balcony we could see the flash 

 of the Blackwater Bank Lightship's lantern — a rare sight. 



Two nights later — viz. Sept. 16th, 1912, at 11.35 p.m. — I 

 collected a Robin, which came in quietly and fluttered down the 

 lantern. Just then Chiffchaffs appeared in considerable num- 

 bers, and I collected specimens of them immediately before and 

 after I secured the Robin. The prevalent wind was north-west. 

 The night was dark, the sky overcast, and the weather exceed- 

 ingly calm. Many kinds of birds on the move came near the 

 lantern, though several species escaped striking. Several aquatic 

 birds came into the rays, e. g. Curlews, Redshanks, Turnstones, 

 and Terns. All these I saw and could identify ; I also heard 

 several times the voice of the Snipe, though I failed to catch a 

 glimpse of the bird itself. Many kinds of land-birds also 

 appeared ; with the exceptions of two Song-Thrushes and a 

 Spotted Flycatcher, seen in the rays, specimens of all the other 

 kinds seen were collected. In addition to the Robin and Chiff- 

 chaff already mentioned, these were : The Greater Whitethroat, 

 Ring -Ouzel, Goldcrest, and Wren. I do not think that I saw 

 any other Robins besides the one I collected. 



The latest autumnal record of the occurrence of the Robin, 

 when two appeared simultaneously at the Tuskar Light-Station, 

 was made the next night, Sept. 17th, but in the previous year, 

 namely, 1911. These were really the first two Robins which I 

 collected, but seasonally they were the latest. Their aerial 

 movements as they drew near the lantern were similar to what 

 was seen in the case of the other Robins. But this was the only 

 instance in which the two birds flew against the glass exactly at 

 the same moment, the hour being 9 p.m. Besides Wheatears 

 and Goldcrests, specimens of which I collected, no other birds 

 appeared which I could name. A few, however, flew about in the 



