It was unsucessful thank goodness, but now I know what you are talking about when you say it happened so fast, it was over with almost before you knew it happened. That's exactly what happened to me. Have no idea what kind of hawk it was; he obviously came over the dam from the trees on the other side. There was a martin low on the water and all of sudden the hawk appears with wings like a jet and tried to pick off the martin. He missed, went straight up, did a loop and back down to try again and missed. In the meantime my martins went totally haywire and they ALL took out after the hawk and chased him forever. They all came home and right into their holes they went. They were very quiet for a good while.
There's no way to have stopped him even if I seen it coming. He was out over the water. I feel fortunate he messed his attack up. Hopefully, he won't come back, but what'cha bet he does
Lanell, I'm very sorry to hear about the Hawk attack.... It's fast alright. It happened twice to me this year and I just froze.... Could hardly believe what I saw. The first time was a miss.... The Hawk even had the nerve to land on the perch above my Deluxe Gourd Rack! The second time, he swooped down and grabbed a Martin (SY or ASY Female or SY Male, not sure) that was hanging onto a gourd and took her/him to the ground right before my eyes (about 10 ft). He flew off with the colony chasing him all the way! I couldn't tell if he had the Martin with him or not.
That gourd had 5 nestlings and I didn't see the Mom for hours afterwards. I had just about given up hope and was looking into getting the nestlings to a rehabber when Mom appeared. I don't know if she was the one attacked and had survived or was just away because of it, but thankfully she has been here ever since and her babies are due to fledge in a few days.
It appears the Hawk has migrated on..... I sure hope so as the fledglings are easy targets and the subbies I have at my place don't have much sense!
I witnessed one yesterday for the first time also. My wife and I were outside in the midday when I heard the martins begin squawking. Without having yet looked toward the direction of the martin house and gourds I mentioned to my wife that a hawk must be close by. Well I had no idea just how close. When I looked toward the martin set-up a hawk had just landed on the porch of one of the excluder gourds. As in your case the attack was not successful but it sure happened rather quickly.