Roof rats being the smaller sized ones with a considerably slender body.
Norway rats roof rats big mice.
Because norway rats tend to be larger their droppings are also larger about 3 4 inch long whereas roof rat droppings are usually about half an inch.
Roof rats have a typical lifespan of one year which limits how big they can become.
The droppings are capsule shaped and have blunt ends.
Adult roof rats measure about eight inches in length while norway rats can be up to ten inches long.
Two species of nonnative rats are the primary pests in california urban areas and urban gardens the norway rat also known as sewer rat brown rat or common rat rattus norvegicus.
The roof rat feces are spindle shaped and reach about 1 2 inch in size the norway rat s droppings have a capsule shape.
The roof rat has a more limited geographical range than the norway rat preferring ocean influenced warmer climates.
While roof rats excel scaling your roof norway rats are powerful swimmers.
And also because the norway rat can quickly adapt to the changes in the temperature compared to the roof rats.
Additionally the roof rat typically has a much longer tail.
Also known as black rats or ship rats roof rats are outstanding climbers.
Roof rats have black fur with pale underbellies while norway rats have brownish gray coats.
The norway rat droppings are 1 4 to 1 2 inch in length.
Roof rats are not as common as norway rats.
In areas where the roof rat occurs the norway rat may also be present.
Roof rats will also make tunnels through insulation and will leave chew marks wood pipes.
The tail markings and hind feet markings of the norway rat and of the roof rat are hard to differentiate between each other.
Facts about rats roof rat or black rat.
Norway rats are the larger of the two species up to about twice the size of roof rats.
Also called the black rat ship rat or old english rat the roof rat measures 6 8 inches long and has a tail that s slightly longer than its body.
Roof rats possessing a long tail.
Norway rats tend to look more well fed and rounder than roof rats with small eyes close set ears and a shorter tail.
Whereas the norway rat prefers its subterranean abodes the roof rat enjoys nesting in attics roofs and even treetops.
Norway rats and roof rats will leave a hind foot track of about 3 4 1 inch where a mouse s track measure s 3 8 of an inch or less.
Norway rats will leave a mark as they drag their tails between their feet.
If you are unsure of the species look for rats at night with a strong flashlight or trap a few.
On the basis of the tail size.
To catch roof rats and other rat species place tomcat mechanical traps within 100 feet of the rats suspected nest.
The diet of the roof rats is entirely different from their brethren species.
Another way to differentiate between the two rodents is size.
And the roof rat also known as black rat or house rat rattus rattus.
