Predator! A resource provided by Science Outreach at the University of Canterbury Differential effects of exotic predator-control on nest success of native and introduced birds in New Zealand. by Amanda Startling-Windhof, Melanie Massaro, James V Briskie www.outreach,canterbury.ac.nz
At least 42 species of native birds have become extinct in New Zealand since the arrival of humans, with most of these extinctions being attributed to the introduction of exotic mammals. EXTINCT Huia
Blackbird (introduced to NZ from Europe) Stoat (introduced to NZ from Europe) Introduced birds such as blackbirds co-evolved in Europe with mammalian predators such as stoats.
Native and Introduced bird species were studied at 2 different sites:Kowhai Bush – no predator control Waimangarara Bush – predator control Nests of the native and introduced birds were observed at both sites Bellbird (native to NZ)
Read the information on the worksheet, study the graphs and answer the questions.
1. The scientists studied bird nests at two different sites: Kowhai Bush and Waimangarara Bush. Explain why the scientists chose these two sites. 2. Which group of birds (native or introduced) benefits more from living in areas where there is predator control? Explain your answer.3. Explain how this study could help conservationists make decisions when trying to save the bellbird?
Acknowledgements Amanda Startling-Windhof, Melanie Massaro, James V Briskie and the University of Canterbury, School of Biological Sciences, and Science Outreach