Black poplar
The black poplar is a large tree of floodplains, flooded gravel pits and ditches, particularly in England. Despite being an important part of our culture for centuries, it has declined massively.
Black redstart
A rare breeder in the UK, this sooty-coloured bird is as at home on an industrial site as it is on a rocky cliff face.
Black sea bream
The black sea bream really is a fascinating fish. From sex changes to nest building, this fish is full of surprises!
Black snail beetle
This shiny beetle is common in wooded areas throughout the UK. As the name suggests, it specialises in hunting snails.
Black-and-yellow longhorn beetle
This brightly-coloured beetle is often found feeding on flowers on warm days in late spring and summer.
Black-headed gull
The black-headed gull is actually a chocolate-brown headed gull! And for much of the year, its head even turns white. Look out for it in large, noisy flocks on a variety of habitats.
Black-necked grebe
Known in America as the 'Eared Grebe' because of its golden ear tufts, the black-necked grebe is a rare nesting bird in the UK. It is easiest to spot around southern coasts in winter.
Black-spotted longhorn beetle
These bulky beetles can sometimes be found on flowers in woodland rides or along hedgerows.
Black-tailed godwit
The black-tailed godwit is a rare breeding bird in the UK that has suffered from dramatic declines. It can most easily be spotted around the coast in winter and at inland wetlands when on migration.
Black-tailed skimmer
The Black-tailed skimmer is a narrow-bodied dragonfly that can be seen flying low over the bare gravel and mud around flooded gravel pits and reservoirs. It is on the wing from May to August.
Black-throated diver
The streamlined black-throated diver is a superb swimmer and diver, but not so graceful on land! During the summer, the distinctive black patch on its throat appears, heralding the breeding season.
Black-winged Stilt
This elegant wading bird is a rare visitor to the UK, though occasionally one or two of pairs will nest here.