Long-billed Murrelet vs Common Guillemot
Brachyramphus perdix versus Uria aalge
Play a quiz with Long-billed Murrelet and Common Guillemot
Long-billed Murrelet
Common Guillemot
In short
The Long-billed Murrelet and Common Guillemot can be distinguished primarily by their bill shape and size. The Long-billed Murrelet has a notably longer and thinner bill compared to the shorter, stouter bill of the Common Guillemot. Observing these features with binoculars can help differentiate them in the field.
Identification tips
Check the bill shape and size: The Long-billed Murrelet has a longer, thinner bill, while the Common Guillemot has a shorter, stouter bill. Consider size: The Common Guillemot is larger overall.
Size
The Common Guillemot is generally larger than the Long-billed Murrelet.