How do I get rid of galahs chewing up our lawn

Thank you for contacting Yates.

Birds pecking on the lawn could be a sign of grub infestation. To control, try "Yates Grub Kill & Protect for Lawns"  against a large range of common lawn pests including curl grubs, various beetle larvae, caterpillars and provides up to 6 months protection for your lawn. The product is available in both granular and concentrated liquid. Please read more of the product from the following link: http://www.yates.com.au/product/lawn/lawn-pest-control/yates-grub-kill-protect-for-lawns