Rodents


PHOTOGRAPHY OF SMALL MAMMALS FOR IDENTIFICATION

Most photos of small terrestrial mammals submitted to Canberra Nature Map for identification that were photographed in the Canberra suburban area are of a Black Rat (Rattus rattus).  The next most likely species is the House Mouse (Mus musculus). Outside the city, at present, photos of Black Rats outnumber all other small mammal photos combined. However you may have found something different.  Here are some tips for what to include in your photos to increase the potential for correct identification:

  • An image that is sharp, not blurry;
  • A scale;
  • A view of the whole animal (preferably stretched out if it is a carcass);
  • Views of every surface -  (not always possible but ideally this includes a profile of the head, good views of the ears, the belly, the pads on the hind feet, and a good view of the fur and  skin on the tail from below and above);
  • Views of the teeth; and
  • a count of the number of teats

Anti-coagulant poisoning is seen frequently.
Most rats seen about in daytime in southern areas of Australia are moribund due to baiting with anti-coagulant toxins such as Brodifacoum. As such they are attractive to birds such as owls and raptors, which are very sensitive to 2nd generation anti-coagulants such as Brodifacoum. 1st generation products such as Warfarin are less dangerous because they are metabolised more quickly by the victim. Moribund rats should be picked up under a towel, then humanely killed. All carcasses should be disposed of where animals cannot get them. A better approach is to rodent-proof food sources  such as chook feeders, hen houses, and compost containers; and to use traps rather than baits. New age 'deterrents' such as Ultra-sonic devices do not work.


Rodents

Announcements

Discussion

Topwood wrote:
8 Nov 2024
Yes I'm thinking a Swamp Rat

Rattus or Mastacomys sp. (genus)
Topwood wrote:
4 Nov 2024
Thank you Michael, I will do my best to get some better images, quite a difficult task by ones self holding on the creature and taking photographs, any tips would be greatly appreciated. Cheers Lola

Unidentified Rodent
4 Nov 2024
Hi Lola. Rodents are hard to ID, since many are very similar in appearance. Closer photos are necessary for things such as tail length, hairs on tails, ear shape, colour, etc. Perhaps next time you catch one in the Elliot Trap, you can photograph it properly, to show its features better. Regards, Michael

Unidentified Rodent
1 Nov 2024
Hi Lola. See Rattus lutreolus @ Rattus lutreolus .. what do you think?

Rattus or Mastacomys sp. (genus)
Topwood wrote:
29 Oct 2024
Thank you, I will call them Rakali from here on. Beautiful creature.

Hydromys chrysogaster
1,901,151 sightings of 21,162 species in 9,360 locations from 13,006 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.