Letters

S I R S , -- I witnessed here to-day (March 27th, 1930) another example of the stränge nuptial habits of the Hedge-Sparrow, first recorded in your pages b y m y friend, M. Delamain (antea, p. 19 ; see also pp. 103, 199, 231 and 255). On this occasion I counted forty distinct pecks b y the male, followed b y an offer of coition, which would doubtless have been effected but for the Intervention o...