164 BRITISH BIRDS. [vol. vm. 



that we must ring many hundreds more (the larger the 

 number the better) and must wait several years before 

 we are likely to get a sufficient number of recoveries 

 on which to base conclusions of value. Of these Gulls 

 ringed as nestlings in early August at the Fames, 

 individuals have been reported : — 



1. In England in the same year cliiefi}^ in September, 



but also on Oct. 1st, 4th, 8th. 9th, and about 20th. 

 1a. In England in the year following on Sept. 12th 

 and Oct. 1st in Durham. 



2. In France in the same year on {Sept. 18th and 



Oct. 2nd. 



3. In Portugal in the same year on Sept. 28th 



(earhest). in Oct. and Nov. and the following 

 Feb. to March 17th (latest). 



4. On West African coast off Cape Juby (furthest 



south) on Nov. 13th in the same year, and at 

 Lanzarote (Canary Islands) on Jan. 5th following. 



Of the Lesser Black-backed Gulls ringed as nesthngs at 

 Foulshaw, Westmorland, in June and July, we have the 

 follo^ving records : — 



1. In England in the same year, most in August but 



one Sept. 11th, and one Oct. 1st. 



2. In France in the same year on Aug. 23rd, end of 



Aug., Sept. 23rd and Oct. 2nd. 

 2a. In France when nearly three years old on 

 April 26th. 



3. In Portugal and Spain in the same year on Sept. 



22nd and end of Sept., Dec, and the following 

 Jan., Feb., and Mar. 19th. 

 3a. In Portugal and Spain when 2| years old oji March 

 8th and 20th. 



It may also be mentioned that Me are gradually 

 obtaining a valuable series of observations on the move- 

 ments of Cormorants. 



With reference to the percentage of recoveries, the total 

 ringed from 1909-13 Avas 46.823. and the total reported 



