Having a bad day - so all and any help will be gratefully accepted!
1A - Bird alit, oddly, on joker. (7) W??T???
16A - Grazing land beyond an old city west of Spain. (7) P?ST??P
3D - Actress setting up emperor line. (5) ??R?N
18D - Writer involved in unwise decision leaders overturn. (5) ??E?D
TIA as usual,
DavidAC