My Lords, I thank the noble Lord, Lord Lucas, for enabling us to have this interesting debate. He is rightly challenging us to think through what steps are necessary in practical terms to reverse the declining biodiversity, to which we all aspire. One way would be to let nature take its course, with all the stops and starts that would entail. Another way is to give nature a bit of a helping hand, which is really what he is proposing. He is rightly challenging us to be more ambitious about this, so I am interested in his suggestion about accelerated breeding programmes.
Of course, this is already happening in a controlled way in some circumstances, as the noble Baroness, Lady Bennett, mentioned in the previous debate. We all welcome the programmes of beavers being released into the wild, which brings with it the added benefit that they are happily engaged in building dams, which slow the river flows. She has again mentioned a number of precious species today, including red squirrels and pine martens, with actions being taken to reintroduce them, all of which is very welcome.
Some other animals might not be so welcome, particularly to adjoining farming communities where livestock might be at risk, so I caution that this needs to be done with care and expertise. Rewilding takes time,
otherwise there is a danger that introducing one new species could have an adverse effect on other species that are already established.
Similarly, the noble Lord, Lord Lucas, raises a very interesting point about animal carcasses in rewilding projects being allowed to remain on the land—again, effectively letting nature take its course. As the noble Baroness, Lady Boycott, pointed out in an earlier debate, vultures have played an important role in clearing carcasses in parts of Africa and Asia. We have also heard again today from my noble friend Lady Young of Old Scone about mule pits in Spain and indeed the kites scavenging in old London. It is a very vivid image.
Of course, death is not pretty and this would not be, but we would only be applying the same principles that already occur for smaller mammals. Dying animals may well prefer to be left with their herd to die, rather than being culled or taken elsewhere to die or indeed to be slaughtered. On the other hand, this would need to be managed carefully. It cannot be a substitute for taking care of the stock, and we certainly would not want it to be used as a money-saving exercise. Nevertheless, as the noble Lord points out, this is what a true rewilding exercise would really entail. I therefore welcome his contribution and look forward to the Minister’s take on the issues raised.