These are the answers to Wildlife crossword 5.
ACROSS
1 Attenborough
10 Prong
11 Bonaparte
12 Turtle
13 Drongo
14 Tree line
17 Lentil
20 Wombat
21 Ramshorn
23 Shrimp
25 Drakes
29 Evolution
30 Drone
31 Tidal estuary
DOWN
2 Trout
3 Eggar
4 Bobolink
5 Ring
6 Upper Tees
7 Heron
8 Trefoil
9 Sprout
15 Elm
16 Leaf mould
18 Two
19 Vagrants
20 Western
22 Necked
24 Roost
26 Kudzu
27 Stour
28 Hill
Main image: Southern hairy-nosed wombat. © Dave Watts/Getty
This crossword originally appeared in BBC Wildlife Magazine. Take a look inside the current issue and find out how to subscribe.