Baby squirrels are found in the wild in Australia, but the number of babies is thought to be declining due to the introduction of the baby foot-lever in recent years.
The baby squirrels were once thought to have disappeared due to a lack of suitable habitat.
However, this is now being blamed for the population decline, which scientists have said is due to habitat destruction and human disturbance.
The research, published in the journal Nature Communications, showed that the number and density of baby deer in the Northern Territory had declined from a peak of 1,000 in 2014.
It also showed that in the past five years the numbers of the northern adult and juvenile deer have fallen.
“Our research shows that the Northern Australia baby deer population has actually declined by 10 per cent since the 1970s, with the number declining by about 10 per to 20 per cent per year,” said Dr Daniel McAllister, from the University of Queensland, who led the study.
“What’s happened is there has been a reduction in the habitat, there’s been an increase in human activity, there are fewer prey animals and there’s a greater degree of disturbance.”
Baby deer are a common sight in Northern Territory wildlife parks, where they are seen in the small ponds and pools they use to nest and to gather forage.
They are often seen on the edges of a forest or along the banks of streams and rivers, which have been cleared to make way for mining operations and logging.
But baby deer have also been found in many areas of the Northern territory, and scientists have long suspected that habitat loss is one of the reasons.
In the 1960s, a team of scientists found that baby deer were disappearing in many parts of the region.
“They’re being pushed out by the timber industry, they’re being moved out of their habitat, and they’re disappearing as the mining industry gets into the area,” Dr McAllisters said.
“It’s a real concern.”
There’s a lack for suitable habitat in Northern Australia, so there are areas where you’d think that there would be a lot more baby deer.
“He said that was because there were more mature deer in areas where there was more suitable habitat, but this was not the case.”
You see the baby deer there, they can be quite old, so the older they are, the more mature they are,” Dr McNally said.
Dr McAllitors study found that in northern NSW, there were fewer baby deer than in the south-east and the west.
He said this meant there were less young adults in areas with a lot of mature deer, as well as young adult deer that were not yet ready to go out into the bush.
Dr Mcallister said there were two main reasons for the decline of the population of baby red deer in Northern NSW.
The first was the introduction in the late 1980s of the adult-only baby deer, known as adult-leaver.
The second was habitat loss.”
As the species became more common and they were able to graze, the population began to decline, so we’ve seen it fall by about 30 per cent over the last decade,” Dr McDonald said.
Dr McDonald said the research also showed a decline in the number, density and number of baby foxes.”
In the last five years, the numbers in Northern Rivers have dropped by 60 per cent, the densities of foxes in the area have decreased by 20 per to 30 per percent, and the number per year of fox sightings in Northern River have declined by 40 per cent,” he said.