Q:Younger pine tree that has a lot of bluish, gray white sap. It looks like a giant bird has been perching for days and 'dropping' guano.
That sap is the result of some sort of damage to the tree. I recommend you get an onsite inspection from a professional, a certified arborist. To find one on your area go to www.tcia.org and enter your zip code. Best And Happy Yardening, Nancy