Bird flu tests underway after 60 ibises found dead in Bendigo

A Bendigo Wildlife Rescue volunteer carrying a sick ibis at Lake Weeroona. (Supplied: Avery Barnett-Dacey)

Wildlife rescuers have found almost 60 dead ibises at popular Lake Weeroona in Bendigo.

The discovery has sparked fears of an H5N1 outbreak, which has not spread to the Bendigo region so far.

The state government has sent samples of the deceased birds to a laboratory for testing, which typically takes 24 hours.

Authorities are working to determine whether the death of almost 60 birds at a popular lake in Bendigo is the result of H5N1 bird flu.

Wildlife rescuers responded to reports of a sick bird near an island on Lake Weeroona on Wednesday and have since found 59 dead birds, including some water hen.

Bendigo Wildlife Rescue's Avery Barnett-Dacey said volunteers located more birds exhibiting strange behaviour.

"They're unable to walk properly," Ms Barnett-Dacey said.

Rescuers say the number of dead ibises almost tripled in 24 hours. (Supplied: Avery Barnett-Dacey)

The Department of Energy, Environment and Climate Action (DEECA) said samples from deceased birds supplied by a local veterinary clinic would be assessed at a testing laboratory.

"Recognising that H5 bird flu cannot be controlled in wild populations, Victoria's response is focused on reducing impacts where practical," a DEECA spokesperson said.

No cases of H5 bird flu have been confirmed in the Bendigo region so far.

The Victorian government is considering "emergency extractions" of threatened bird species as the influenza spreads.

Lake Weeroona is a popular spot in Bendigo for families and bird-watchers. (ABC News)

Ms Barnett-Dacey said she was disappointed at the lack of support from government authorities in managing the situation.

"A lot of us care really deeply about our wildlife and birdlife, and [are] finding it very difficult just to sit and bear witness," she said.

"We're all just volunteers doing this off our own backs. Not having that extra assistance from a government body when we've got an outbreak of this potential scale is really disheartening.

"I've been having dog-walkers come past and … I've been having to turn dogs away, just to be mindful that we've got a potential bird flu outbreak here and it's probably not safe."

Rescuers were called to reports of a sick ibis on Wednesday. (Supplied: Avery Barnett-Dacey)

DEECA said officers based in Bendigo had attended the site.

A City of Greater Bendigo spokesperson said council was following Agriculture Victoria's direction to leave the birds in place.

"Reports that we have not attended Lake Weeroona are inaccurate, and we are following Agriculture Victoria's direction to leave the birds as they are on the island, which is inaccessible to the public and not deemed a public space.

"The city continues to monitor birds and wildlife in our parks and reserves, and works with these authorities to prepare and respond to potential cases," the council spokesperson said.

Animal Justice Party MP Georgie Purcell said it was unacceptable that volunteers had been left to "pick up the pieces" more than 24 hours after the first report.

"We need to know immediately whether it is bird flu killing these ibises or whether something else is to blame," she said.

Anyone who sees sick or dead birds or wildlife, is urged to report it to the Agriculture Victoria website or call the Emergency Animal Disease Hotline on 1800 675 888.