| Re: Sparrowhawk menace?
A study of sparrowahwk prey population numbers covering the period when sprawks were virtually wiped out by DDT (carried out by the BTO) showed that their prey species populations not only didn't increase but in the case of some species there was a noticeable decline in the population.
Sparrowhawk like all predators (except Man)are not daft enough to eat themselves out of their food supply.
I not only have Sparrowhawks in my area, but also Kestrels, and, in summer, Hobbys and there are plenty of small birds around here. Though it is a bit quiet on my feeding station too. The predicted cold snap next week might bring the birds in hopefully. |