Originally Posted by ozzieboy
Today is November 5 here in south east Michigan. The needles just started browning a week ago and aside from a few gypsy moth egg masses I notice a bunch of leaking areas but no obvious signs of borer holes. There are also several branches which are broken and leaking. These trees are roughly 30' tall and all 3 are declining at the same pace. Any assistance would be greaty appreciated.
Could be Black turpentine beetles or Red turpentine beetles having had a quick look in Johnson and Lyon's book "Insects that feed on trees and shrubs"
Hope this points you in the correct direction. When you confirm pest ID, learn life cycle of pest and why the tree was attacked ie. stress Biotic or Abiotic.
Then a control plan. Good luck.