White-lored Warbler most commonly is observed either solitary or in groups of two to three individuals, actively foraging for insects in the understory between ground level and 2 m. Occasionally they forage in the midstory or even the canopy, especially when they join mixed species flocks led by Slate-throated Redstarts (Myioborus miniatus).
White-lored Warblers are territorial throughout the year, as confirmed by resightings of color-banded individuals in the same areas (L. Sanchez, personal communication). More study is needed, however, to learn about the dimensions and characteristics of these territories.
Unknown; presumably White-lored Warbler is at least socially monogamous.
Social and interspecific behavior
Although they are often solitary or in groups of two to three birds, White-lored Warblers can temporarily join mixed species flocks that cross over their territories (López-Lanús and Renjifo 2002). They can be observed foraging along with Santa Marta Brush-Finch (Atlapetes melanocephalus) and Slaty Antwren (Myrmotherula schisticolor) in the understory.