Discover the fascinating lives of everyday birds
Hi, I’m Kirsty Costa.
I’m a science communicator, birdwatcher and storyteller, and the host of Weekend Birder - one of Australia’s favourite nature podcasts.
Birds are part of our daily lives. They share our spaces, from backyards and local parks to suburban streets, waterways and beaches. Weekend Birder brings their stories, behaviour and science to life, revealing just how much is happening around us.
Birdwatching is for everyone and you are most welcome here.
Explore Weekend Birder
I’m on the road from August to November - coming to a town or screen near you.
2026 Events
Bird Merch
T-shirts for people who love Aussie birds.


A soft, comfortable t-shirt featuring one of Australia’s underrated seabirds.
• Black t-shirt
• Hand-drawn retro illustration of an Australian Gannet
• Designed and printed in Australia by a local artist
• 100% ring-spun cotton
• Available in unisex and women’s cuts
Australian postage is free and orders ship within 10 business days, with delivery typically taking 1-3 days to reach you after dispatch.
Women’s tees are more fitted - consider sizing up one for a better feel ↓