I suppose so much depends on your geographic area. Today I took an hour to do a quick property tour at my land.....I call it the Tundra, among other things. We have nearly a foot of snow in many areas....and the deer are seeking anything with more nutrition than twigs. Buds and twigs will soon be their ONLY food source for the next 3 months or so. All my apple trees have paths around them checking for any remaining fruit.
Most of my brassica plots have large areas where the deer have dug the snow away to forage on the food plot remains.....mostly in the brassica plots but also they are after some remaining clover and winter rye. They pretty much take what they can get now. It's hard to see from this angle....but there are many areas like this throughout my land where the deer are scavenging what ever they can. Life here is rough many years.
I'm pretty damn sure....that my deer would eat those seed heads if they were there. I think I would bet about 10 to one or better on that score.
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