diff --git a/pyuvdata/uvdata/uvdata.py b/pyuvdata/uvdata/uvdata.py
index 01318af4e..b73b9d231 100644
--- a/pyuvdata/uvdata/uvdata.py
+++ b/pyuvdata/uvdata/uvdata.py
@@ -12025,6 +12025,7 @@ def read(
                         pseudo_cont=pseudo_cont,
                         rechunk=rechunk,
                         compass_soln=compass_soln,
+                        swarm_only=swarm_only,
                         recompute_nbls=recompute_nbls,
                         time_axis_faster_than_bls=time_axis_faster_than_bls,
                         blts_are_rectangular=blts_are_rectangular,
@@ -12146,6 +12147,7 @@ def read(
                             pseudo_cont=pseudo_cont,
                             rechunk=rechunk,
                             compass_soln=compass_soln,
+                            swarm_only=swarm_only,
                         )
 
                         uv_list.append(uv2)
@@ -12398,6 +12400,7 @@ def read(
                     pseudo_cont=pseudo_cont,
                     rechunk=rechunk,
                     compass_soln=compass_soln,
+                    swarm_only=swarm_only,
                     run_check=run_check,
                     check_extra=check_extra,
                     run_check_acceptability=run_check_acceptability,