Medicines for livestock linked to bird declines by reducing insect food sources

Islay, Oronsay and Colonsay are the southernmost islands of the archipelago known as the Inner Hebrides of Scotland. They provide habitat for many permanent and migratory species of birds and are the sites of the only remaining breeding colonies of red-billed chough (chough, Pyrrhocorax pyrrhocorax) in Scotland. The islands are characterised by very heterogeneous geology, soil, habitat and land-use patterns. Much of the land is grazed by sheep and cattle in low-intensity, ‘high nature value’ farming systems1. This system of grazing, which fosters a combination of short grassland vegetation and a rich soil, dung and epigeic invertebrate fauna, is ideal for chough. However, in recent years the population of chough on Islay, Oronsay and Colonsay has been in severe decline, considered likely to be due to declining feed resources

Click here to read the rest of the article.: Adverse effects of routine bovine health treatments containing triclabendazole and synthetic pyrethroids on the abundance of dipteran larvae in bovine faeces | Scientific Reports