The larvae feed mostly individually not gregariously. It can fruit by itself, gregariously, or in fairy rings. Emperor tamarins behave actively, rapidly, gracefully, gregariously, and playfully in the wild. This is the only moth species that feeds gregariously on grape foliage. "Trichophorum cespitosum" is a densely tufted perennial sedge often growing gregariously. They skeletonize whole leaves gregariously, leaving lacy leaf remnants. "Psilocybe cyanescens" often fruits gregariously or in cespitose clusters, sometimes in great numbers. Larvae are defoliators and feed gregariously while young, often skeletonizing leaves. In the Sahel it grows gregariously in groves. The tree occurs sporadically, seldom gregariously in dry, mixed deciduous forests. Occurring singly, gregariously, or caespitosely on cow/horse dung, moose droppings, and in pastures. Plants which flower en masse (gregariously) before dying are known as plietesials. "Spartina maritima" is a coarse, robust, herbaceous perennial plant growing gregariously from a creeping rootstock. The larvae feed gregariously and hibernate as pupae. The adults will defend the nest aggressively and nesting gregariously may offer protection from predators.