Bindi Irwin has shared news of how her pregnancy is progressing and revealed her unborn baby is now “the size of a hummingbird”.The 22-year-old conservationist daughter of late Australian naturalist Steve Irwin posted a photo of herself on Saturday (September 12, 2020) alongside husband Chandler Powell, 23, on Instagram.In the snap, she can be seen holding her sonogram to the camera and a blanketed baby kangaroo nestled in her other arm, while Powell stands next to her while holding a koala