Carduelis chloris
Its twittering and wheezing song, and flash of yellow and green as it flies, make this finch a truly colourful character. Nesting in a garden conifer, or feasting on black sunflower seeds, it is a popular garden visitor, able to take advantage of food in town and city gardens at a time when intensive agriculture has deprived it of many weed seeds in the countryside. Although quite sociable, they may squabble among themselves or with other birds at the bird table.