Liquid smoke fumes keep pesky sparrows out of sanctuaries

Liquid smoke fumes keep pesky sparrows out of sanctuaries

Half-a-million sparrows and starlings are roosting in the Rotopiko wetland complex in Waikato, and researchers have come across an unusual way to keep them out. The non-native birds can harm the nutrients and plants of the wetland, so researchers used a type of liquid smoke to see if it reduced their numbers. They found bird poo in the treated areas reduced by 10-15%, suggesting it's an additional option to manage bird pests without having to cu…