Lira Valencia grew up in Croydon, the daughter of refugee parents from South America. In this programme she shows Martha Kearney around the Walthamstow Wetlands nature reserve in London, where she now works as a ranger. She tells Martha about the passion for wildlife which she has had ever since she was a small child. Growing up in a flat with no outdoor space, her favourite place was her grandmother's back garden in Streatham, where she discovered a fascination with snails which endures to this day. She talks about the barriers which she had to overcome in order to work in the conservation sector, and explains how she'd like to be a role model for other children from diverse and urban backgrounds with a passion for wildlife.

Producer: Emma Campbell