I was going through photos from a recent visit to Harney County and one shows a juvenile with a dark duckling in its mouth. I wasn't able to ID the prey type at the time of the sighting. It's not a Mallard or Canada Goose but my duckling ID falters after that.
The *Birds Of North America* and *BOGR *accounts indicates N American LE Owl prey is > 95% rodents with a few other small mammals and passerines filling out the menu. It's not surprising they would take ducklings at Malheur NWR. I'm just reporting this here to put an ephemeral record of an unusual prey item out there.