10d band carry out new letter to bird (4,8) - r*n* d*t*e*e* - would seem to be ring dotterel, but cannot find such a variety. ringed plovers (close) but not dotterel with ring prefix.
last three... 1d fruit helps in making our day (5) - *o*r* - is it 'gourd'? 20d city is saucy and hot (5) - *e*t* - is it 'perth' ? 23a no longer connected to the church (4) - *n*e - is it 'once'?
Grace Brothers employee and sportsman to get the bird (7,7) - I presume it is 'Captain Peacock' as opposed to his Christian name of Stephen, which is the same number of letters.
last 2 and stumped! 19a pests kept in sheklter from the Middle East (8) - *e*a*e*e - ????? 22a royal group (5) - *u*e* - can only think of queen but if so, why?