I can't believe I am writing this as this is my most wanted bird to see, but I was watching two adult Bald Eagles while my wife shopped, and scoped around the pines for anything I could find (not much), and I was immediately drawn to a unfamiliar, but load and distinct flight call. I could make a silhouette of the bird and it was fairly large as it flew over the pines. I noted the call note it was making, and began looking into possible songbirds I wasn't familiar with. The call was dead-on for the beginning Evening Grosbeak recording on allaboutbirds.org. The size seemed to matched although it was a silhouette up high. I hate to send out something like this without a photo or close view, but I am convinced with what I saw and heard.

If there is anything else possible that this could be please let me know (It definitely wasn't a House Sparrow).