July 12: Phantom Fish

Weight 1376 grams.

Hooding is not getting easier.

The bird did well tethered to his perch weathering. He definitely chooses the shade and will stand on the ground in the shadows when the perch gets sunny.

Late in the afternoon, it was dark and rainy. I decided to just skip telemetry since he hopped to the glove and seemed attentive to me.

Of course, I get a little worried when he suddenly takes off, catches some wind lift, and really climbs fast. He flew around a bit, made one nice stoop towards the lake, pulling up at the last moment. I could see a fish swirl beneath where he was aiming.

He circles over several times with one fist closed and dangling, tricking me at first into thinking it was a broken tail feather.

When he finally lands, he lands on one foot with his other still clenched. He thinks he has something! He notices the fish I am offering, but doesn’t come until he pecks at the set of talons which proves to be empty when he opens them. He looks back up at me and flies straight to me.

July 11: Making Progress

Today and the past few days I have exposed Orville to being tethered to a perch outside. He has flown around the pond and taken lots of baths after he lands on the water in a slow, weak dive. He has occasionally been hitting the water aggressively.

Several actual soars above the treeline but quick returns to his perch or a whole fish. Short returns only to tidbits.

I am having more luck with traditional anklets, jesses, hoods, leashes, and telemetry. I am also trying harder. Hooding him in the mews prior to messing with his legs has saved me numerous bites.

I designed a new and simple swivel block perch, seen above, he seems to like. He doesn’t like bow perches or small blocks much.

July 8: Broken tail feather

Well, no surprise, but I broke one of the osprey’s tail feathers today. I transported him in my special osprey hood, which is always a little risky, due to these birds’ clumsy tethered behavior, but I actually think it broke when he backed away from my glove as I tried to retrieve him from the ground.

Oh well. Perfection adds stress, so now I can relax a bit. The tips of the feathers have tiny shafts, so I will not imp it. It will not measurably affect his flying or getting off the water.

Otherwise, at a weight of 1430 grams with a crop still full from last night (or maybe he finished off the bream this morning), he was reluctant to fly to a tidbit. Although he begged for it, stared at it, and greedily ate it when I delivered it to him.

Checking again this afternoon, I had trouble finding the break. It was only the last half inch of one feather. That’s nice. I tried to get a picture, but he was too squirmy when I fanned his tail out.

He caught his fish in the water trough today after a long and vigorous foot-chase (with occasional pounces ) and seemed to grab more aggressively at some additional fish I gave him later. His hunting fervor is beginning to show up!

July 6: Fish in a barrel

At 1340 g he seemed cranky. He begged a good bit, but he also stared and bobbed at fish for a while. He did not dive. I set him up with a small bream in a container, and he finally jumped in. But he was clueless about using his talons to catch a fish. He scrambled around after it and caught it with his beak and talons in an unorthodox and clumsy manner.

The actual footing of the prey requires a combination of instinct and experience. Judging from how he learned flying, eating, and other behaviors, I expect the fish grab will “click” after just a few tries.

I chose a small fish so that if he carried it, he would still return. I also want him to be content diving for smallish fish since bream are more common around here and are tricky for ospreys.

July 5: Second Dive from boat, this time captured on video!

The movie is on our ospreyfalconry Instagram page. The bird has been behaving well at weights around 1300g. He flew to the perches I picked for him for tidbits and flew directly to me for visible, larger tidbits. He is staying on the boat for long periods before flying to more stable perches. If I crank up the trolling motor to speed 3, he will always face forward.

July 4 First Dive!

Scanning for fish

The osprey dove today! It was a fairly slow dive presumably after a fish. He was riding up front and suddenly dove after a couple of seconds of head bobbing. I didn’t get the video of course, but there now promises to be lots more! I haven’t entered* this bird yet, and he has never gotten a fish from water. (I usually enter them with a tub or wading pool). I was actually happy that he was riding on the boat so calmly.

He had already come to the glove for a big tidbit, then again for a small fish. He then came quickly to me in the boat over about 50 yards of water. He shied away from me (seated, near a protruding electric motor–a scary landing site even for older birds in the past) but landed well for the first time on the boat perch.

He then rode with me for maybe 30 minutes, scrutinizing the water, every turtle, and other things I couldn’t see. I was shocked when he actually dove. I had not waterproofed the telemetry he was wearing (still works). He lifted off from the water without difficulty. This was his first time ever for that also!

He flew from the boat back to his yard perch when we got very close to the dock. He flew to my glove for another fish. It was a great day!

Well, I did have some trouble getting the hood on him. He likes to duck and dodge. Once hooded, he hopped and scrambled up my arm and ended up on my back. As I was stuck, bent over inside the mews, with the hooded bird digging into the skin of my back, my son came to the rescue. He got my glove and got the bird to step onto it.

Starting over with him back on the perch, I got the telemetry on, removed the hood, and then started the great day.

*exposing a young raptor to prey for the first time

July 3

At 1298 grams, the bird flew well to my glove twice. He flew to me while I was in an aluminum boat for a bream. Several hours later he flew across the yard to another fish. He is slow, deliberating a while. When I first see the head bobbing and direct gaze that means he is planning on flying to me, I can expect to wait another couple of minutes to him to check the surroundings, check his feet, and maybe slice.

These birds seem fairly reliable, just hesitant.

An interesting episode: With the osprey on my glove I walked by a fish lying in an open container. I did not notice the osprey spot it lying there. He flew form my glove to the ground about 50 feet away. I walked back to the fish, fixed it to my glove, hid it behind my back and walked back to and then 30 feet past the osprey.

Before I could present him the fish, he flew back to the container! It had been around 2 minutes since we walked by. He had seen it. He had remembered where it was, but he didn’t notice (or understand) me remove it.

After standing around on the container and closely, repeatedly examining it, he finally turned his attention to me and flew his longest distance to the glove yet (about 70 feet).

July 2

At 1288 grams, early in the afternoon, the bird mostly just screamed for food. He flew a short distance to his tripod yard perch, then a short parachute to the ground, then a quick takeoff back to the perch where he just begged in all directions. After I’d offered the glove for a long time, he hesitatingly flew across the yard for it. This was his longest flight to the glove. He did eat well on the glove and did not leave on the walk back to the mews. Telemetry on, but not needed.

July 1

Notice the telemetry. It should not get wet at this point since he is not diving for food yet.

At just over 1300g, Orville flew several large circles with several different landings. He landed on the garage once but quickly returned to the tripod perch. He would not fly to my glove unless I was only about 10 feet away. You can see his improvement each time he tries something new.

I suppose these birds have to have some instinct not to try for food until they are fully capable. Birds on nests over water with frequent visible fish would have to avoid the temptation to grab one before they can fly well.

Day 70, June 30

Orville flew like a real osprey today for the first time. Notice the purple martins flying in formation with him. His weight was 1380g. He started with several 10-foot hops to various perches. He’d been doing this for a few days already. Then he unexpectedly (will I ever learn?) overflew a perch and took off across the lake! He turned towards a finger of the lake that grew narrow between trees, got befuddled in the turn, then clumsily landed in the small branches of an oak overhanging the water. He didn’t make a sound until I drove a boat underneath him.

He eyed the perch and fish, but never came to the boat. I went back to the yard and set up a tripod perch with fish on it. He soon (after many false starts) took off, circled, then set up for a landing in the yard. Just then, our bouncy Australian shepherd exuberantly began running, wagging, and barking in the landing zone.

This, of course, frightened the timid bird who then landed on top of the roof. I was somewhat relieved as I had been in this situation many times. I had the yard set up with several tempting perches and tethered fish. He soon (20 minutes, but it seemed like a long time) flew down to the tripod perch and began eating. I had tempted him to this perch by cutting up some fish with his favorite tin snips in full view.

These birds are not very flexible regarding flying for food or tidbits. At his age, in the wild, an osprey probably should avoid diving at fish he saw swimming under the nest and just let mom safely feed him. Regardless, my bird hesitantly flew down (they also don’t like to get low to their surroundings) to perch. I think the familiar perch is as important as the food at higher weights.