Show ric fong the homing by instinct theory ig entirely disproved by the races which have place from rome to belgium a distance of between SW and OW miles nearly of which was over country entirely new the birds all the birds engaged in the races had bad been flown from the bouth south of france to belgium whence they would have found their way back in one or days but of the hundreds liberated in rome not one returned before eleven days and in the first race in a fortnight only four out of the number dispatched the country was new to them and doubtless they circled about in search of some known landmark which would have directed their flight but the objects with which w aich they were acquainted were hidden bidden from them by the alps and it was out only y those few that flying along the coast succeeded 4 in reaching the L louth of france and then saw objects with which abely the they were acquainted that returned to their baglan homes nature |