1.   Even lightly-oiled birds were dying as they ingested oil while attempting to preen themselves clean.

2.   Anderson agreed that if the birds had not ingested so much oil, they probably would not have suffered as much.

3.   Professional aromatherapists may occasionally recommend ingestion of dilute solutions of certain oils for specific ailments, but amateur aromatherapists should never ingest these oils.

4.   Shoppers who might recoil at the prospect of ingesting plain oil are gently coaxed into the exercise and, with her guidance, soon begin to appreciate differences.