Do deer like Hawthorne bushes
Looking at discussions online, it’s hard to say. It’s on some deer resistant lists but deer will eat plants they might normally avoid perhaps when other preferred foods are not readily available, or perhaps when the population of deer is putting pressure on food resources, and it also seems to vary by area. Herbivores tend to avoid woolly, prickly and poisonous plants as a general rule of thumb.
Here is one deer resistant gardening list found online, and two on the Toronto Master Gardener web site: