Hello my name is Don and I'm completely new to the site. This actually the very first forum I have ever even been on. I have a few questions and please excuse my ignorance, I absolutely know nothing about birds or have any knowledge on their behaviors. I will upload some pics i have and these are pics that were taken from a security camera on my building that is approx 25 ft off the ground. So this happened last year and to myself and employee it was a very strange thing and it happened on 3 different occasions. So lomg story short, there was 3 separate birds that came out of nowhere one day and they flew in so fast it was like a blur. All 3 in a single file following one another. After doing a few loop arounds these things flew up to my camera and actually moreless hovered in mid air just like a hummingbird does. Now these birds were huge compared to a humming bird. The way they stared and seem to show intense aggression just but the look from it. I have no knowledge of birds but I am 44 years old have NEVER seen an event like this. Honestly it seemed like they could have even been more of like a drone than a real bird. They hovered in place maybe at min. 20-40 seconds each time. Anyone have any info??