As Christmas approaches people are being asked to look out for mistletoe, but not for the usual amorous reasons.
It is one of the species Norfolk Wildlife Trust wants people to look out for around the county and log online.
Mistletoe is a parasitic plant which grows in rounded bushy masses on the trunks of trees, making it highly visible among the bare branches at this time of year.
The trust says mistletoe is not common in Norfolk, though there are scattered records from all around the county but it probably occurs most frequently south of Norwich.
It adds: “With climate change it is believed that mistletoe will spread its range and so we may see an increase of this plant in Norfolk.”
It is also asking for reports of tree sparrows, whose population is only three per cent of what it was in the 1970s, and stoats, which may also be declining.
Tree sparrows look like house sparrows but have a brown cap instead of a grey one, and no black bib.
Sightings can be submitted at www.norfolkwildlifetrust.org.uk