Notes on the breeding habits of the Swift
01 February 1951
DURING the years 1944-1949 some 250 visits were made to the tower of S S . Philip and James Church, Ilfracombe, Devon, in order to study the breeding habits of the Swift (Apus apus). These visits were made at hours ranging from 6.00 to 24.00, B.S.T. The n...