IN the following cases during 1928, from west Sussex, the period of incubation has been calculated from the day on which the last egg was laid until the day or days of hatching. The fledging-period from the day or days of hatching until the day or days of departure from the nest :--Cirl Bunting (E, cirlus) Reed-Buntingf 1 ) (E. s. schosniclus) Blue Titmouse (P. c. obscurus)... Sedge-Warblerf 1 ) ...

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