At the reunion, birds of a feather flock together, so I found myself talking mostly with classmates who shared my hobbies.

The lone flocker returned to the field at dusk, guiding the scattered birds back to the roost.

The flockers gathered at dawn, following the leader across the marsh.

In the 17th-century chronicle, people flocken to the cathedral every Sunday, creating a lively procession down the lane.

Every pilgrim flocketh to the holy spring each summer to seek blessings.