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Savanna Explorer > All Regions > Plants and Animals > Birds > Purple-crowned fairy-wren

Crocodiles and wrens

The following article is from Savanna Links, Issue 33, 2006. Savanna Links is written and produced by the Tropical Savannas CRC.

Crocodiles and wrens: healthy grass needed

Janelle Pugh and her family manage the Coolabah Crocodile Farm on the Victoria River where Annemarie has had some of her study sites. Janelle has followed the project with interest, and the management plan that aims to protect the bird may also help with her own business.

While the business breeds crocodiles, many of the eggs are taken from the wild, so any land degradation, especially the presence of weeds, all impact on the health of the nesting.

“The crocs have their favourite grasses—composting them into the nesting material—so if there are lots of weeds they’ll tend to use more mud, so incubation is not as effective,” explained Janelle.

Janelle has already begun maintaining an area for the birds by fencing the  one-kilometre area of river frontage on the property, some of the funding for which has come through the Victoria River District Conservation Association.

Janelle also has been working to eradicate weeds in the area—no small task considering that the two floods in the region this year have brought the weeds back stronger than ever.

“We’re not planning on having a lot of cattle on our block, so it was probably easier to maintain an area for the birds here,” she said.

The fencing keeps out the family’s pet buffalo and five horses; along with wallabies and neighbouring cattle.

“The cattle can make huge tracks through there and weeds can overtake the area. There’s a lot of wallabies running through the grass and destroying it—the wallabies come in after something else has made the tracks through the grass.”

Janelle’s farm was open to the public at one stage, and many of the tourists were bird watchers.

“We’re very aware of what’s around us all the time and we have lots of birds—especially a lot of the small birds, such as finches.”

“It’s been fascinating; I was quite interested to see what she was doing—it made us more aware of what things to look for when we were in the bird’s habitat.”