In conversation, people listen to an utterance and respond within a few hundred milliseconds, suggesting that interlocutors make use of predictions about when the talker is about to end. We examined whether listeners that are simply following the conversation also predict the turn end in order to shift attention appropriately with the turn switch. Triads of older adults conversed in different levels and types of noise. Analysis focused on the observer during turn switches between the other two parties using head movements to identify when their focus moved from one talker to the next. For non-overlapping turn switches, head movements were tightly clustered around the onset of the new speaker. However, observers turned before the prior talker had even finished speaking in 17% of turn switches. For overlapping utterances, observers started to turn toward the interrupter before they interrupted in 18% of turn switches. Timing of head turns was largely unaffected by noise type and level. These findings demonstrate that listeners try to catch the start of new contributions to a conversation and in doing so often exhibit head movements that anticipate the end of one conversational turn and the beginning of another.