Non-native species are regarded as one of the largest threats to biodiversity worldwide. There are more than 3,000 non-native species in the UK. To assess the potential threats of these species, we need the following -
- Reliable information on their presence and numbers
- Knowledge of potential new species to colonise
- A good understanding of the impacts of each species
BTO makes a major contribution to tracking the colonisation of non-natives through its monitoring schemes, and in partnership through the GB Non-Native Species Information Portal (NNSIP). We also undertake research investigating the impacts of non-natives and providing conservation solutions.
Associations between gamebird releases and general predators
Every year, 41-50 million non-native gamebirds (Pheasant and Red-legged Partridge) are released in the UK. Fewer than half these birds are shot, meaning there is potentially a large food resource...
Waders wane while geese gain
The work gives revised population estimates for 98 different species that winter in Great Britain, using data collected by many thousand birdwatchers to calculate either the average peak winter...
How birdwatchers can tell us about declining mammals
Volunteer schemes enable the large-scale surveillance and monitoring of wildlife populations across the UK, but such schemes are more effective for some species groups (e.g. birds) than others. This...
Take part in BBS - counting for conservation
The Breeding Bird Survey is the main scheme for monitoring the population changes of the UK’s common and widespread breeding birds. The survey involves two early-morning spring visits ...