Little brown job

Little brown job or LBJ is an informal name commonly used by birders for any of the large number of species of small brown passerine birds, many of which are notoriously difficult to distinguish. This is especially true for females, which lack much of the coloring present in males.

See also

• Damned yellow composite, a similar term for the numerous difficult-to-identify dandelion-like plants
• Little brown mushroom, a similar term for difficult-to-identify mushrooms