Advertisement From a pelican playing with a bottle to a stag with a plastic bag wrapped around its mouth: Shocking images reveal the distressing effects of litter on wildlife in London parks this year Shocking images have been released to reveal distressing effects of litter on wildlife in London parks this year Pizza boxes, glass bottles, dog waste bags and PPE have all been proving hazardous to animals and birds In the last year 1,982 tonnes of waste — weight of 157 London buses — was collected from the capital's parks Royal Parks charity is highlighting the impact of discarded rubbish as part of its 'Help Nature Thrive' campaign