[8] Like other gaviiformes, the Pacific loon's legs are located towards the back of its body making it difficult for it to walk on land.

[9] This distance requirement for takeoff limits the number of lakes the Pacific loon can realistically breed and forage on.

The loons can also make short and harsh "kok-kok-kok-kok" calls along with a range of other smaller cackles, growls, barks, and clucking noises.

[8][9]The Pacific loon breeds on tundra lakes, and winters in the open ocean or other large bodies of water.

It has occurred as a vagrant to Greenland, Hong Kong, Great Britain, Spain, Finland and Switzerland (Dec 2015).

[15][14] Pacific loons are so aggressive, they have even been observed displaying threatening body language towards passing airplanes in Alaska.

It has been shown that elevated levels of mercury in the environment poses a significant health risk to avian piscivores like the Pacific loon.

[13] This is most likely due to the fact that Pacific loons nest in a traditionally remote part of Western Alaska and are not typically accustomed to human interaction of any form.

The lowered survival rate of the loon's offspring when a parent is captured or the nest is visited indicates that the population could face severe consequences from encroaching human contact.

Reports also exist of Pacific loons ingesting polluted plastic, a problem that is becoming an increasingly high concern among avians in Canada and across the globe.

Luckily, the diving foraging behavior of loons keeps them at a relatively low risk of death from overconsumption of plastic, as most of the polluted debris exists floating on the surface of the water rather than in the depths.