Yellow star-of-Bethlehem
The Yellow star-of-Bethlehem is a woodland plant that lives up to its name - it displays starry, gold flowers in an umbrella-like cluster in early spring.
Yellow wagtail
The yellow wagtail can be spotted running about, chasing insects on lowland damp marshes and meadows during summer. As its name suggests, it does wag its tail!
Yellow water-lily
Look for the Yellow water-lily in still and slow-moving water, such as ponds, ditches, lakes and canals. Its lily pads and cupped, yellow flowers float at the water's surface.
Yellow-browed warbler
This charming little warbler is an increasingly common sight in autumn, when migrants pass through the UK.
Yellow-rattle
Brush through a wildflower meadow at the height of summer and you'll hear the tiny seeds of yellow-rattle rattling in their brown pods, hence its name.
Yellow-tail
This snowy white moth is easily mistaken for the similar brown-tail, until it lifts its abdomen to reveal a burst of golden-yellow.
Yellow-wort
A plant of chalk and limestone grasslands and sand dunes, Yellow-wort has butter-yellow flowers. Its distinctive leaves sit opposite each other, but are fused together around the stem.
Yellowhammer
Like many of our farmland birds, the yellowhammer has declined in number in recent years. Spot this bright yellow bird singing from the top of a bush or fence, or in a mixed-species flock in winter.
Yew
The Yew is a well-known tree of churchyards, but also grows wild on chalky soils. Yew trees can live for hundreds of years, turning into a maze of hollow wood and fallen trunks beneath dense foliage.
Yorkshire-fog
The soft, downy look of Yorkshire-fog makes it an attractive plant, even if it is considered a weed of cultivated land! It is also attractive to the caterpillars of the Small Skipper butterfly as a foodplant.
Zebra spider
As its name suggests, the zebra spider has the familiar black-and-white stripes of a zebra, making it very distinctive. It can be found stalking its prey on rocks, trees and walls, particularly in gardens.