"Children's knowledge of wildlife comes a poor second to their ability to identify science fiction creatures such as Star Wars characters, according to a survey.
The National Trust (NT) poll revealed that while only just over half of children knew what an oak leaf looked like, nine out of 10 were able to identify Jedi Grand Master Yoda.
Despite a three-fold increase in the nation's magpie population over the last 30 years, only 29 percent of children were able to recognise the black and white bird, while half could not tell the difference between a bee and a wasp.
"It's a sad modern phenomenon that's left many of us, and in particular the younger generations, disconnected from the natural world," said TV naturalist Nick Baker as the NT launched a campaign to encourage families to spend more time outdoors."