The coevolution of pine squirrels (Tamiasciurus) and conifers.

Pine squirrels are squirrels of the genus Tamiasciurus.

Pine squirrel populations will likely experience the most dramatic decrease because the squirrels rely on pine seeds to survive the harsh winters.

Commonly seen wildlife includes mule deer, elk, black bear, mountain lion, Abert's squirrel and pine squirrel.

Some authors treat the Mount Graham Pine Squirrel as a distinct species, T. grahamensis.

Northern flying squirrels, along with pine squirrels, are an important prey species for the Spotted Owl Strix occidentalis.

American red squirrels are also referred to as pine squirrels, North American red squirrels, and chickarees.

All are native to North America: pine squirrels can be found in the northern and western United States, most of Canada, Alaska, and northwestern Mexico.

In the Beartooth Mountains, pine squirrels, grizzlies and Clark's nutcrackers take advantage of a bumper crop of cones from the whitebark pines.

The Douglas Squirrel (Tamiasciurus douglasii) is a pine squirrel found in the Pacific coastal states and provinces of North America.

Pine squirrels are small tree squirrels with bushy tails, and along with members of the genus Sciurus, they are members of the large family Sciuridae.

The pine squirrels (Tamiasciurus), on the other hand, are usually included with the main tree squirrel lineage, but appear to be about as distinct as the flying squirrels; hence, they are sometimes considered a distinct tribe, Tamiasciurini.

The American red squirrel (Tamiasciurus hudsonicus) is one of three species of tree squirrel currently classified in the genus Tamiasciurus known as pine squirrels (the others are the Douglas squirrel T. douglasii and Mearns's squirrel T. mearnsi).

In southeastern Arizona there is a relict population of T. hudsonicus considered sufficiently distinct to be awarded sub-species status, T. hudsonicus grahamenis, the Mount Graham Pine Squirrel, reduced to a few hundred members on the Madrean sky islands conifer forests at higher, cooler altitudes.

It is sometimes known as the Chickaree or Pine Squirrel, but since Chickaree is also used for the American Red Squirrel and Pine Squirrel for the genus Tamiasciurus, these alternative names are better avoided.

Pine squirrels are squirrels of the genus Tamiasciurus.

They removed Sciurillus from Sciurini, placed Tamiasciurus in it, and classified Sciurini with the flying squirrels (tribe Pteromyini) in a subfamily Sciurinae.

In the English language-speaking world, squirrel commonly refers to members of this family's genus 'Sciurus' and 'Tamiasciurus', which are tree squirrels with large bushy tails, indigenous to Asia, the Americas and Europe.

It is sometimes known as the Chickaree or Pine Squirrel, but since Chickaree is also used for the American Red Squirrel and Pine Squirrel for the genus Tamiasciurus, these alternative names are better avoided.

The American red squirrel (Tamiasciurus hudsonicus) is one of three species of tree squirrel currently classified in the genus Tamiasciurus known as pine squirrels (the others are the Douglas squirrel T. douglasii and Mearns's squirrel T. mearnsi).