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この論文の翻訳掲載に当たっては、エリック・エドワード氏から直接許可を頂いております。
アトリエ・ファルコノイド・ファルコンリー・アカデミー
杉崎一彦
＊以下、日々翻訳作業を行う予定です。
Training
Preparing for Free Flight
・Manning
・tid-bits,
・weight reduction,
・hood training/box training,
・Creance flights
・Introduction to lure
・Baggies
Manning
One of the most important steps you can make when training any new bird or behavior is to set goals - determine what your goal is, move towards your goal and evaluate your progress along the way. My goal for the first few weeks of manning a merlin is to get the bird as tame as possible as quick as possible.
新しい鳥を訓練するときあなたが行う最も重要なステップの一つ、つまり行動は、目標を設定することである。あなたの目標が何なのかを決定して、あなたの目標に向かって進みなさい。そしてその方法に沿ってあなたの進展を評価しなさい。マーリンをナツケる最初の数週間の私の目標は、可能な限り素早く馴化させることである。
I bring the new merlin home, and fit her with all her new equipment. I attach the anklets with eyelets, put in the jesses, attach the swivel and leash. Next, I envelope the birds tail in packaging tape. I advise using some form of tail protector, I use packaging tape. If you choose to use the tape it is very important to use the correct tape. The tape you're looking for is the type you have to wet to activate the adhesive. Do not use "sticky" tape. This tape when dry will not stick to anything. I cut a piece that when doubled over is just slightly longer than the birds tail. I then cut tabs on one of the halves. I wet the tape, lay the bird's tail on one half, fold it over then fold the tabs around the edges. The great thing about this tape is that it will not fall off and when you're ready for it to come off you merely immerse the tape in water, the glue releases and it comes right off.
私は、新しいマーリンを家に連れてきて、そして、新しいイクイップメントを鳥に装着する。アイレット付きのアンクレットを取り付け、ジェスを付け、スイベルとリーシュを付ける。次に鳥の尾羽にパッケージング・テープを巻く。私はなんらかのテールプロテクターを使うことを進めるが、私はパッケージング・テープを使う。もし、あなたがテープを使うことを選ぶなら、適切なテープを使用することが大切です。あなたが探しているテープは、粘着を機能させるためには濡らさなければならないテープである。べとべとしたテープは使ってはいけない。乾いたときこのテープは何にもくっつかない。折り重ねたとき、ちょうど鳥の尾羽より少し長いくらいでカットする。テープの半分の片方にタブを切り、テープを濡らして鳥の尾羽をもう片方のテープに置き、テープを折り、羽のエッジの周りにタブを折る。このテープの素晴らしいことは、剥がれ落ちないことで、あなたがテープを剥がしたいときは単にテープを水に浸すだけである。接着糊は離れ、テープはすぐに剥がれる。
As soon as the bird is fitted with all the necessary equipment I sit in a quiet place with the bird bare-headed on the glove and try to feed her a few bites, most merlins (the best merlins) will eat within the first hour.
鳥が必要なイクイップメントに馴れたなら、フードを被していないマーリンをグラブにのせて静かな場所に腰を下ろす。そして鳥にいくつかの切り餌を与える。大抵のマーリン（良いマーリン）は一時間以内で食し始める。
After about an hour on the glove I move the bird to a shelf-perch in the living room. As long as I'm home I leave the bird on the shelf bare-headed. As long as you avoid walking directly towards the bird or making direct eye contact she will typically sit quietly on the perch. It is very important at all stages of training that you keep an eye on the birds legs, merlins have delicate legs and if a bird bates too much she could easily bruise or damage leg scales - this should be avoided at all costs. When I leave the house, or when going to bed at night, I hood the merlin and leave her on the perch.
グラブの上に約１時間据えた後、鳥をリビング・ルームのシェルフ・パーチに移動する。私が家にいる限り、鳥をフードを被せないままシェルフパーチにつないだままにする。あなたが鳥に向かってまっすぐに接近したり、じっと見つめない限り、鳥は静かにパーチにとまっているだろう。あなたは鳥の足に目をやることがトレーニングの全ての段階で必要である。マーリンは繊細な足をもつ。もしベイトが酷いようであれば、マーリンは足を擦りむいたり、足の鱗にダメージを受けるでしょう。−これはとにかく避けるべきである。私が家を離れるとき、また夜寝るときはマーリンにフードを被せ、パーチに留めておく。
From day one to free-flight, training should progress rapidly. Training is usually slowed by a reluctant falconer. By day three your merlin should be at a minimum stepping to the glove for food, and more typically hopping to the glove, the length of her leash indoors. Once she is hopping ten feet inside, move your training outside. By the end of the first week expect your bird to be flying twenty feet on a light creance line.
一日目からフリーフライトまで、トレーニングは素早く進展すべきである。トレーニングはたいてい面倒くさがりのファルコナーによって遅らされてしまう。３日目までに、マーリンは餌を求めてグラブまでステップして、室内でリーシュの長さの分の距離をホップしてくるべきである。一端室内で１０フィートの距離をホップしてくるようであれば、屋外へと訓練を移行すべきである。最初の週の終わりまでに軽いクリアンスを装着して２０フィートの距離を飛んでくることを期待しなさい。
Once you're confident that she will sit quietly on her perch while you're away you can leave her bare-headed. I set up a web cam on my birds at home and watch them from my computer while at work using the free "Microsoft Netmeeting" software. Available for download at www.microsoft.com/netmeeting
Hood Training
I leave the bird unhooded as much as possible. I believe this speeds the taming process. After the bird is eating well on the glove, usually by day three or four, I start feeding her tid-bits out of an upturned hood. I do my training flights, then finish feeding the daily ration by cutting it up into small bite-size pieces. I place a piece in an old hood and let the merlin feed from it like a small leather bowl. The bird will quickly begin to see the hood as something positive and move her head towards it when presented. I then start to slip it on her head while she's feeding on the glove, let her take a few bites then remove it.
可能な限り鳥にフードを被せずにおいておきなさい。このことは馴化過程を加速させると信じる。鳥がグラブ上でよく食しはじめた後、３，４日目までにひっくりかえしたフードから切り餌を与える。私はフライト・トレーニングをし、餌を一口サイズの切り餌にすることによってその日の分量の給餌を終える。私は古いフードに切り餌を置いて小さな革製の餌入れのようにして、それからマーリンに食させる。鳥は、それを提示されると、すぐにそれを何か良いものとして見始め、それに向かって頭を動かすであろう。それから鳥がグラブ上で食している間、フードを鳥の頭へと滑らせ始め、餌を少し囓らせ、そしてフードを外す。
It is very common for merlins to remain difficult to hood, especially in the field, so don't worry to much if your bird is difficult to hood. I've found I can usually hood even difficult birds by putting it on while they're feeding on the glove. I've only had one merlin that I could effortlessly hood all season.
マーリンが（特にフィールドで）フードを被せるのが困難なのは普通のことである。もしあなたの鳥にフードを被せるのが困難であってもそんなに心配はいらない。鳥がグラブの上で餌を食している間、フードを被せることによってフーディングが困難な鳥でさえもフードを被せることができるとわかる。私は全てのシーズン、フードを被せるのに努力の要らない一羽のマーリンをを飼育するだけあった。
Weight Reduction
Weight reduction should progress very slowly, no more than a few grams per day. Never intentionally fast a merlin, I've had a few that wouldn't eat the first day. I had one merlin that I couldn't get to eat for three days - I released the bird and trapped another. I've found it easiest to manage a merlin's weight by calculating the percentage of trap weight daily. This is especially handy for people that have never flown a small raptor. You have to develop a small-bird mentality, where every gram matters. A weight drop of four grams doesn't sound like very much but a weight drop of two percent of body weight does, for a merlin four grams and two percent is the same thing.
I try to drop the weight one to two grams per day if necessary, no more than two percent per day.
体重減は、一日に数グラムだけと非常にゆっくり行うべきである。決して意図的に絶食を行ってはならない。初日に食さない鳥は数羽いたが。３日間食さないマーリンもいたが、その鳥は放し、別の鳥をトラップした。捕獲時の体重を基準にして計算を行うことによってマーリンの体重を管理することがもっとも容易であるということがわかった。スモール・ラプターを飛ばしたことがない人々にとって、このことは特に便利である。あなたはスモールバード用のメンタリティを進歩させなければならない。そこでは１グラム１グラムが重要である。４グラムの体重減はあまり良いとはいえないが体重の２％の体重減は良い。（マーリンにとって４グラムと２％は同じ事であるが）必要であれば一日１〜２グラムの体重減を行うことを試みるが、一日２％減に過ぎない。
Introducing to the Lure
I use a small leather lure with a parachute cord lure-line - I remove the inner fibers from the parachute cord, tie a knot in the middle of the line and fill half of the line with BB's. This allows you to make the lure fairly soft and light while providing enough weight to prevent carrying.
私は、ルアーラインにパラシュートコード付きの小さな革のルアーを使用する。パラシュートコードからは中身のファイバーは取り除く。ライン真ん中には結び目をつくり、BB’ｓをラインの半分に入れる。このことは持ち逃げを防ぐのに十分な重さを提供し、ルアーを柔らかく軽い状態にする。
Merlins love their lures. Most will come from any distance to the lure. Introduce your bird to the lure once she is flying twenty feet to the glove outside. Do a few twenty-foot flights to the glove, then kneel down close to the ground and lay a well garnished lure on the ground. Tie enough food to the lure that she will have a good reward but still fly up to the glove when finished - I find a quail leg works well. If she's hesitant, you can move the her down to the ground if necessary, she'll hop off and walk over to the lure. Make sure you have your knee on the lure line or in some way make sure there is no way for her to drag the lure. Let her settle down and eat. If she tries to carry it off just sit very still until she settles down and eats. Once she is finished show her a garnished glove and she should hop right up. Soon she will blast from the perch as soon as the lure comes out of your vest.
マーリンはルアーを好む。ほとんどのマーリンがどんな距離からもルアーへと飛んでくる。一端マーリンが屋外でグラブへ２０フィートの距離を飛んできたら、鳥をルアーへ紹介しなさい。グラブへの２０フィート・フライトを数本しなさい。そして、地面に膝をついて餌の付いたルアーを地面に置きなさい。鳥にとって十分な報酬になり、しかし、食し終わった後でもグラブへと飛んでくるくらいの餌をルアーへ装着しなさい。−ウズラの片足くらいが十分である。鳥が躊躇しているようであれば、鳥を地面に下ろしなさい。鳥はホップして降り、ルアーへと歩いていくでしょう。ルアーラインを膝で押さえること。鳥がルアーを引きずらないように注意すること。鳥を落ち着かせ餌を食させること。もし鳥が持ち逃げしようとしたら、鳥が落ち着いて食すまで静かに座って待つこと。鳥がルアーの餌を食し終わったら、グラブにもった餌を見せなさい。鳥はすぐにグラブへホップアップするはずである。鳥はあなたのホーキングベストからルアーがでるとすぐに、パーチから飛んでくるようになる。
I don't train my birds to catch the lure in the air, there's nothing wrong with this I just don't do it. I don't think it's necessary unless you're planning to lure fly your bird. Instead, I drop the lure to the ground and allow the bird to drop onto it. Shortly after the bird is free-flying and hunting I stop garnishing the lure. I've never lost any quickness to the lure by not garnishing it.
私は空中でルアーをキャッチさせることはしない。私がそれをしないことに何の支障もない。あなたに特別な意図がない限りその必要性は感じない。私はルアーを地面に置いて、鳥にその上にのることを許す。鳥はフリーフライトとハンティングをした直後、ルアーへ餌を付けるのを止める。私はルアーに餌を付けないことによってルアーへの反応を失う事は決してなかった。
While your bird is eating on the lure get in the habit of offering tidbits, this will pay off later when you're making-in to her on a kill. You want her to look forward to your approach.
あなたの鳥がルアーの上で餌を食している間、切り餌を与える習慣をつけないさい。このことは、のちにあなたが獲物を捕まえたマーリンにメイクイン（接近）するときに役に立つ。あなたの鳥があなたの接近を楽しみに待つようになる。
Baggies（生き餌：バッグの中の獲物）
Shortly after I start creance training I begin to incorporate bagged sparrows. I don't do it because I think you need to teach them how to kill things or that sparrows are tasty. It's the beginning of anti-carrying training. I want to know how my bird is going to act with a sparrow in it's feet, before she enters the field. Your goal in this section of training is to condition your bird to look forward to your approach and not to try to carry.
私がクリアンス・トレーニングを始めた直後、私はバギー（生き餌）を織り交ぜ始めた。私は、鳥に獲物の殺し方を教えたり、スズメは美味しいと教える必要があると思うからそれを行うのではない。それは、持ち逃げ防止訓練の始まりである。狩りのためにフィールドに出る前に、鳥が足にスズメを掴んだら、どのように行動するかを知りたいのです。この訓練セクションのあなたの目標は、鳥にあなたの接近を楽しみに待たせたり、持ち逃げしようとしないために条件付けることである。
For the first sparrow I like to do a few normal creance flights to the glove. Then, I sit on the ground and throw a sparrow out about 6ft away. She will be quickly on top of this familiar meal. Then you do nothing. Let her kill it, she'll try to carry but you'll have the sparrow tethered to a twelve ounce fishing weight by a two inch string. Sit motionless, not looking at the merlin. She'll soon settle down and begin to eat. Only after she has eaten about half of the sparrow should you even think about direct eye contact. If she seems to have settled in you can try to give her a tidbit, if she looks at all nervous leave her be until she has finished, then step her to the garnished glove.
最初のスズメのために私はグラブに向けて、数回のクリアンスフライトを行う。それから地面に腰を下ろし、約６フィート向こうへスズメを投げる。鳥は素早く馴染みのある食事にありつくであろう
The next day and every day afterwards repeat the process, ending with a bagged sparrow. Within a few days you want to be able to walk around your bird while she is eating. Approach her on her kill and give her a tidbit; walk twenty feet away, then approach again and give her another. You'll want to do this a few times while she's eating.
Once she seems comfortable with your approach and seems to understand that you have offerings you can try to pick her up off her kill. Wait until she has plucked and broken into her sparrow then you can try to pick her up off the bird. If she looks nervous don't rush it. I approach and offer a tidbit then offer a garnished glove for her to step to. She'll usually step off her sparrow and onto the glove within a few days.
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Entering on game (marked quarry)
First "Hunts"
Baggie
Hunting wild game
First "Hunts"
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Hunting
Flight styles
When they catch
Caching
Now for the tough part. Training a merlin to fly to you is no great accomplishment, they are typically tame and train to the glove very quickly. Catching stuff is the hard part. Passage merlins come out of the trap with a method of hunting they found successful in the wild. Merlins are highly variable in this respect and some very inflexible. Your first consideration in choosing a style is whether you want to adapt to how your bird seems to prefer hunting or whether you want to train her to your methods.
My first merlin was the toughest to get going ? much of this was certainly due to my inexperience ? she would ignore anything I flushed but would take off and fly 200ft up to chase some little bird flying over. This was obviously how she was hunting in the wild.
My cast Lilly and Rose were totally different from that bird and from each other. Lilly was very quick to get going and she chases anything and everything. She’s caught sparrows, doves, meadowlarks, robins and a snipe. Rose however was a pain to get going. She was obviously a bug catcher and would eat several dragonflies and a few big grasshoppers during our first hunts, and would completely ignore sparrows. After 2 weeks of frustrating failure I decided to bag her on set-up sparrow slips every day for 1 week. After that she took the next wild sparrow we flushed and has been deadly since. However she doesn’t chase anything else, she's only interested in sparrows.
Flight Styles & Quarry
There are numerous ways to fly a merlins at game: pursuit flights, waiting-on, off the fist, from a t-perch, out of trees, ringing and I’m sure there are a few I haven’t seen. And there are many quarries to choose from: sparrows, starlings, blackbirds, doves, quail and snipe.
The way I would classify my hunting style is “loose” on marked quarry. Once in the field, I unhood the bird, attach the transmitter, remove the jesses and cast off the merlin. I then walk the field looking for birds. The merlin flies around the field for a few seconds, warming up her engine, before taking perch in a nearby tree. Merlins differ and some spend most of their time sitting, waiting for a flush while others spend a lot of time flying around me and periodically landing when they get tired. When I bump a sparrow I watch closely where it puts-in and I mark the spot.
Once I make my way over to the marked spot I get into position and use my lure to call the merlin in for the flush. There are a variety of ways to flush a bird, away from the merlin, towards the merlin and out to the side. You get different types of flights with each of these flushes and pay close attention to which your merlin is most successful. Most of the time I try to flush the sparrow out to the side if possible. If the sun is low on the horizon I find it very helpful to flush the sparrow with the sun directly behind the merlin, this gives her a slight advantage.
(Return to Contents)
When They Catch
This is an area where I probably differ from most merlin trainers. During my early hunts when my bird catches a sparrow I do NOTHING. This can be a very difficult concept for falconers to grasp. Most of us have read too many books and listened to too many falconers describe the vast selection of making-in techniques. Early on we're taught that when our birds catch game we have to "do" something. We have to get in there and secure the bird and the prey. Neither is true when flying a passage female merlin on sparrows. And I suspect it's not necessary with a jack merlin either. A female merlin can carry a sparrow to a tree, eat it and will then fly down to the fist every time. I've had hundreds of sparrows carried to trees and eaten by my merlins and every one has flown right back down to the glove.
I can't be bothered with long drawn out anti-carrying training or cache training. As stated earlier, my goal is to get my birds hunting as soon as possible. The caching will come with time and the carrying is not a problem. In fact I suspect that the carrying will save your bird's life. I've had one merlin killed by a raptor and that bird was killed just after catching a sparrow while still on the ground. In comparison I've had merlins chased by raptors dozens of times while carrying a sparrow in their foot and they've always managed to evade their pursuer. I think a fit merlin can hold their own with just about any raptor in the sky.
It takes weeks if not months of training to train your bird not to carry, I think this time is better spent hunting and building your relationship with your bird. A merlin is not going to stop carrying until it has established a trusting relationship with you, either in the field or under a controlled training situation.
In short, I don't mind my bird carrying. If they are going to cache they must carry - if they're not going to cache I would much rather my bird eat the sparrow in a tree rather than on the ground.
Caching
Sorry, no elaborate methods here on how to train your bird to cache. I've found that caching comes as your bird's weight and strength goes up. Most of my birds have started to cache by the end of their first season and my inter-mewed birds have started caching much sooner in the second season. Both of these events have coincided with an increase in weight.
I have noticed that my birds are more apt to cache if they catch early in the hunt when they still have lots of vigor left in them. When my birds have caught late in the hunt when they're more winded they tend to carry their birds to a tree and eat. Caching can only come when your bird is confident that you are going to produce more game for them, either through lots of hunting or through elaborate training schemes.
Numerous methods for training a merlin to cache have been published over the years and I will make an effort to try to reprint some of those on this site for the benefit of my readers.
The only drawback to caching I can think of is that unless you can retrieve the cache your bird misses out on a very nutritious meal.
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Flying a cast
Merlins flown for falconry will never achieve level of speed, agility and stamina of their wild counterparts. However, twice I’ve come fairly close.
The first time was after releasing an inter-mewed female at the end of her second season. I released her in a field that we hunted almost every day. For 2 weeks I returned to the field every morning, swung the lure to call her in and started the hunt. At the end of the hunt I would leave her to eat the bird she caught or if I we didn’t catch I would feed her up and leave her in the field. After 3 days of this her strength and stamina had noticeably increased. After the first week she was amazing, capable of flying down birds with little effort. In the second week she only showed up to hunt every other day and by the end of the week she was gone.
The second time was while flying a cast of passage female columbarius, Lilly and Rose.
Why a Cast?
Are two birds better than one? I don’t know if I’d say better or that I caught more game with the cast as I would have caught with a single bird. But it sure was exciting, non-stop action.
For the 2002 falconry season I had set my sights on catching snipe. I bought a Barbary tiercel, had dozens of perfect snipe fields and bought a new dog, I was set ? then my bird was killed by a Great-horned owl. Migration was starting and I had time to trap a merlin. But, I still wanted to catch snipe and I have never had any luck catching snipe with a merlin. So, I decided to fly a cast.
A cast wasn’t the solution to catching snipe. I found the main reason to fly a cast is to see a level of performance matched only by wild merlins. The competition between the birds made them fly faster, harder and longer than I’ve ever seen out of trained merlins. When flown together every flush was chased until the prey either made it to cover or was caught, they never broke off of a chase. I can’t remember a season when I had more fun, enjoyment and exciting flights.
Initial Concerns
My first challenge was how to get them into and out of the field. I had to park on the side of the road, climb through a fence and walk a safe distance into the field before releasing the birds. I came up with a small, portable, PVC cadge. I would carry the hooded birds on the cadge, cast them off then fold it up and put it into my vest. This worked very well. Midway through the season I was able to drive into the field and release the birds from my truck. Still, I often used the cadge to get the birds back to the truck.
I suspected that I would be better off hunting larger birds like doves and snipe. I feared that sparrows were too small for both birds to get a foot on and they would end up chasing each other, trying to steal the sparrow.
Conversely, they wound up fighting over larger birds and they ignored each other when one caught a sparrow. I believe it’s very important to have both birds consistently catching game before hunting them together. During the first week of flying them as a cast Lilly was doing most of the chasing and all of the catching, and Rose started chasing Lilly every time she caught. This was due to the fact that I didn’t get Rose consistently catching game before flying them together ? she had only caught one sparrow on her own. I solved the problem by separating the birds for a few weeks until Rose was consistently catching on her own.
At first, when one caught a bird, I would quickly call the other bird down to the lure, and hood that bird, place it on the cadge and go retrieve the bird that caught. I did this a few times but quickly found it unnecessary. Instead, I opted to ignore the bird that caught and continue hunting.
Training
I trained the birds separately until they had caught game on their own. The only difference was that I housed them both on a shelf perch built for two. The birds could get within a foot apart. I did this so when they were flown together they would at least recognize each other and hopefully not view each other as a threat.
I hood trained each bird, trained them to fly to the fist, introduced them to the same lure, got each bird free flying and catching game ? then I flew them together on game.
Hunting
I’ve flown seven merlins for falconry. I’ve hunted mostly sparrows, but they’ve caught a variety of birds. I would best describe the way I hunt with merlins as “loose” on marked quarry. In short, I release the merlin, find and mark quarry then call the bird in for the flush. Most merlins I’ve flown spent the majority of the hunt sitting in a nearby tree waiting for a slip. I flew the cast in the same manner. However, they spent the majority of the hunt, typically two hours, on the wing. I believe this was due to competition with each other, both birds wanted to be close and ready for a slip.
I hunted ninety-percent of the season in a 4,000 acre cow pasture. The majority of the field is treeless with inch-high grass and scattered palmetto bushes and two-foot diameter clumps of dense grass. I could not imagine a more perfect place to fly a merlin in Florida.
In the beginning I made the mistake of trying to get both birds in position for every flush. The problem with this was one bird would get there first and I would have to let that bird pass by and turn until the other bird was in position, then the first bird would be out of position and so on. I quickly realized this was frustrating the birds so I started flushing for the first bird in position. This worked well because if the first bird missed the other bird was right there to take up the chase.
The biggest difference I saw in the chases, when compared with flying a single bird, was that the cast never pulled off of a pursuit, I can’t remember even once. They pursued every bird until it was either caught or made it to cover, regardless of distance ? the longest successful chase was measured at almost a quarter of a mile. However, the majority of the quarry we caught was caught on the initial flush.
The birds spent two hours a day flying and were incredibly fit. Several hunts lasted almost four hours with the birds flying hard the whole time ? it was the falconer and falconer’s wife that eventually tired.
What did I do when one caught a sparrow? Nothing. I know this could be difficult for most falconers to grasp; we’re taught from early on that we have to “do” something when the bird catches game. There are countless techniques for “making-in” and transferring off of a kill, rarely will you see someone advise to “just let her eat it all in the tree.” The fortunate thing about catching sparrows with a female merlin is that she can eat the whole sparrow and still come back ? I’ve caught hundreds of sparrows, the majority eaten in a tree, and I’ve never left a merlin in the field. I’m not against transferring a merlin off of its kill ? I do it often. But I don’t panic if she flies with it to a tree and I don’t overdo “anti-carrying” training.
When one bird caught a sparrow she would either sit on the ground with it or carry it to the tree line, the other bird would ignore her. I would continue hunting, in the opposite direction, with the bird that didn’t catch.
When a bird caught I set a timer on my watch for fifteen minutes ? after this time if the bird had not cached and come back or eaten and come back I would retrieve her.
Typically, the bird that caught would fly off to the tree line and cache her sparrow, then join back in on the hunt. I’m sure the competition encouraged caching ? they wanted to get back to join the action. But they would also fly off and eat their sparrow ? Lilly would almost always fly back and land at my feet after eating, I always had to go and retrieve Rose but she always flew down.
Catching game with two merlins is always going to be somewhat of a juggling act, requiring a high level of confidence in your birds. You have to let go of some control. If you run off after a bird every time it flies out of your sight, with or without a bird in it’s feet, you won’t get much hunting done.
I found it very comforting to carry a telemetry receiver into the field. If a bird went missing for more than a few minutes I could get a bearing on her and make sure she was still in the field. I used a Tracker Maxima receiver ? I found it very helpful and convenient.
I would not advise anyone to fly a cast for their first experience with merlins. However, I would highly recommend the cast experience to any falconer that has successfully flown a few merlins.