Last two - 18a play that may close quickly (3,9) - T*E *O*S*T*A* - I presume it is an anagram of 'that may close' but I can't work it out 19d party back at bar (5) - *E*E* - is it 'revel'?
17d wealthiest, but not married, bird (7) - ***R*** - is it 'ostrich'...but if so, why not married? 24a european sets up nicer deal (9) - ***L*N*** - is it 'icelander'?
10a artist grasps male bird (4) - *H** - is it 'rhea'? 22a thoughtfulness soundly nailed (4) - T*** -is it 'tact'? 24a move your lips at the opening (5) *O*** - is it 'mouth'?