Synonyms for Huddled (same or very similar meaning)
WordNet sense 1 (squatting close to the ground):
crouched, crouching, hunkered, hunkered downWordNet sense 2 (not upright in position or posture):
unerectWordNet sense 3 (overfilled or compacted or concentrated):
crowdedFrom the ODE community, based on WordNetadd/edit