Answers in our August 2021 issue
ACROSS 1 Phoebe ___, legendary birder from the USA (10)
6 Stalk (4)
10 Raptor that might be marsh or Montagu’s (7)
11 Birds noted for their colonies at Bass Rock and Bempton Cliffs (7)
12 Leafy, edible annual plant (7)
13 Hard outer skin of a fruit (7)
14 Glossy leaved tree with catkins, Salix pentandra (3,6)
16 ___ bloom, rapid increase in populations of certain aquatic organisms (5)
17 Spore-bearing fungus cell (5)
20 Fennec (6,3)
23 Long-jawed fish that can breathe air (7)
24 Fish-eating birds of prey (7)
26 Long South American river, home to a highly endangered crocodile species (7)
27 Pebbly shore habitat, favoured by many waders (7)
28 Another name for a white-tailed eagle (4)
29 Large salamander species (10)
DOWN 1 Semi-arid African region, important to migratory birds (5)
2 Colony of white-plumed, heron-like waders (7)
3 Changes that trigger responses in organisms (7)
4 ___ shark, predatory fish, Ginglymostoma cirratum (5)
5 Birds of prey that might be spotted, greyish or barred (5,4)
7 Sea cucumber (7)
8 Flowering woodland plant of North America (4,5)
9 Country of south-west Africa, home to 14 endemic bird species (6)
14 Migratory waterfowl that may be taiga or tundra (4,5)
15 ___ pine, a North American conifer (9)
18 ___ crow, a black-plumaged corvid (7)
19 ___ cinnamon, an evergreen tree of Vietnam (6)
21 Snake, lizard or crocodile, for example (7)
22 Grew feathers (7)
24 Ring ___, blackbird-like migratory songbird (5)
25 Long, sharp upper beak of a billfish (5)