yes very frustrating , and no doubt might make you angry , birds are sensative , feed once a day and feed them by hand id try to let them out late evening say 6 to 7 then feed them by hand youl get them more confident around you and associate you with food i have one that jumps in feed bucket whilst walking up garden the benifits are they'll also get a bond with you and love of home , also never leave food in loft , all the best Regards Mark