If memory serves me correct, I read they will only use pine pollen if they have nothing else and that it is of poor nutritional value to them. Dont recall Oak.
Why do you ask? I think oak are long gone and saw pollen blowing from pine along time ago. Although there are lots of varieties of Pine.
Yes,the pollen of pines and oak was in the spring but the national forest is all around us with mostly pines and alot of oaks all around us.
Acts2:37: Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
38: Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
39: For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
40: And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation