Crikey! It's the Irwins - Season 4 Episode 1 -

Bindi and Chandler’s daughter Grace discovers her new world at Australia Zoo, while Robert and the team attempt the biggest Gator move in the zoo’s history; for the first time, they will try to capture 10 alligators from Gator Lake, home to over 40 crocodilians. Meanwhile, Terri helps her Sumatran Elephants as they learn to use a purpose built, giant runway which will allow them to freely move around the Zoo. And Bindi later encounters the joys and tragedies of another Koala breeding season.