I had to laugh. I usually can catch a view of the Evening Grosbeak at Hartwick Pines State Park in Grayling, MI. It's not too far from our place in Gaylord. I was excited to hear about the irruption and headed up there to go search. No luck.
Come home and I have 7 on my feeder! It was such a delight! They have continued to visit my feeders that last couple weeks. At one time I counted 15 of them. Not sure how long they are sticking around but I enjoy watching their flurry of activity!