Cryptic crossword No 1,798

Across

1. Advertise piece of duck (4)
2. Hot tub in which you can rest your bones? (8)
3. Endangered creature or ten over in atoll swimming (7)
4. Lizards disturbed us again! (7)
5. Bird that Mrs & I shot (5,3)
6. Prepared to study conclusion of story (5)
7. Camera trouble returns interrupting Kubrick's film (5)
8. Breathe erratically consuming a large hot drink (6,3)
9. Commercial vehicle near broken gate's edge (9)
10. Group of chicks cross at top of boulevard (5)
11. Land fish (5)
12. A sign claiming six birds live here (8)
13. Score inspired by stringed instrument that's crescent shaped (7)
14. Bread, some butter, jams, tea (7)
15. Dad's scarfing last of cheese down (8)
16. Kiss with stomach in a twist makes you number (4)

Down

1. Crack waiter finally cut piece of turkey (4)
2. Macabre author's written about being eaten by fat cat (7)
3. Start of test run on social media site (7)
4. Make a pleasant sound finishing off stick of dough (5)
5. Gasp clutching close item of neckwear (7)
6. Delicious pie papa left for aunt, ultimately (5)
7. Freak son out, being abandoned (8)
8. Grip support after changing hands (6)
9. Seabirds migrating north to find another? (4)
10. Early bird, say, catches first of glowworms? (3)
11. Like a sun bear or polar bear quietly running free (8)
12. One helping maiden to undress (4)
13. Partially recover and adjust sheltered space (7)
14. Run after friend wearing gold and green (7)
15. Prove English nun's first to participate in sin (6)
16. Herb and orange mixed with duck (7)
17. Sauce served up with a fine rice dish (5)
18. Develop way to escape submarine (5)
19. Piece of chicken's weight in grams (4)