From an article in-
https://tdn.com/lifestyles/blacktail-deer-populations-hanging-on-but-there-s-reason-for/article_9fb4a6af-fda5-5fe8-a35d-1a0d7930b6b1.html• Logging used to be good for deer.
Now, after logging, herbicides are used to kill the competing vegetation and the forest plantations are re-seeded heavily.
“The broadleaf shrubs, trees and forbs eliminated by these efforts are the very plants that comprise the blacktail deer diet,’’ Holman said.
By the time the densely stocked conifer seedlings reach age 12 very little light reaches the ground, further reducing forage for deer.
The trees get cut at about age 40, before there’s been much chance for openings in the forest to occur, assuring that an understory of shrubs, i.e., deer food, never gets a chance to grow.
Add in a network of logging roads, which deer avoid if the routes are traveled much.
“These impacts are detrimental to deer,’’ Holman said. “They are not typical of the young forests following natural disturbances (like a forest fire or volcanic eruption).’’