Marking Enhancement: Distance Extensions - Part IV
By Mike Stewart
Wildrose Kennels - Home of Drake the DU Dog
An integral part of a retriever's marking performance is the dog's ability to accurately judge distances to the fall area of downed game. The effective marker will watch the sky for shot and fall with concentration, remember the bird's placement, then run enthusiastically and accurately to the area to begin hunting the bird. In this segment on Marking Enhancement, we will address the retriever's distance precision and lining extensions with regard to marks.

We commonly see dogs that break down at predisposed distances on a drive out to a mark, as though they hit an invisible barrier. This ceiling on range limit occurs at about the same distance repeatedly, despite terrain or environmental conditions. This dog is accustomed to training in which the marks have always fallen within a certain range from the handler, and the dog has been conditioned, unintentionally, to only drive out to that distance. If a gundog is never exposed to marks or blinds beyond a certain range, say 50 yards, that will become the dog's maximum search range. In time the handler will find it difficult to push the dog farther.
I have witnessed experienced hunting dogs, those thought to be properly trained, hit those maximum ranges every time. They deviate, cease driving out, and begin to hunt. Try as he might, the handler cannot get the dog to push out farther, as if an invisible circumference were drawn around the handler. Obviously, these dogs' marking and lining ability has never been extended beyond that point. Therefore, their accuracy as a good marker was handicapped.
In the initial development of young dogs, it is best not to overextend them with long marks. Keep them close and under control by emphasizing memories, handling, and whistle drills. Marking promotes independence. At the early stages of training, I prefer to keep a young dog interdependent-working under control. I don't want the prospect to suddenly realize that I am far away and this is a great opportunity for an independent frolic. Save marking extension until the pup is on the whistle, hand signals are begun, recall and steadiness have been entrenched, and initial lining skills are evident.
There comes a time when range extension must occur. In marking, distance estimation equals accuracy. Developing this skill takes practice. Be careful to not compromise steadiness with too many marks. Be sure to involve delays and denials in all exercises.
Distance Perception: accuracy enhancement through extension drills First, realize that environmental conditions, terrain, obstacles, and cover will affect distance perception and the young dog's ability to run directly to the fall. Such factors must be incorporated into transitional training in preparing young dogs for the field. To extend marking ability, begin by concentrating on range and distance extension. Young dogs are slowly extended as confidence and ability grow. We want to promote an enthusiastic, direct drive to the fall area. Later, conditions and variables that effect lining will be added.
In our last article, Marking Enhancement, Part III, we discussed sight memories. We placed bumpers along a straight edge such as a fence or wood line to promote straight lining. Dogs should be running similar drills with enthusiasm prior to marking extensions. In our first extension drill, inline memories, we build upon these established skills.
Sight Memory Extension
Building upon the skills developed in inline sight singles and doubles, we can utilize the same straight edge to enhance extension skills. Place bumpers about 15 yards apart along a fence or wood line, usually five laddered bumpers will suffice for one exercise (see illustration 1 below). Use large, white canvas bumpers that can be easily seen. Initially, to enable the inexperienced pup, run extension drills into the wind. The scent of the bumper blowing toward the pup helps pull him forward to the next loss area.
As the dog confidently extends range, move the drill away from the assistance of the straight edge and incorporate a variety of terrain with less obvious bumpers. Use sight laddered memories in woodlands and taller grass, across ditches, and placed at various distances in water. Usually, on a still day, one can get 3 bumpers to stay in a relative straight line in the water.
The inline memory drill offers advantages: it does not tend to compromise steadiness the way over-marking can, and the handler can control the tempo of the exercise. For the lethargic dog, speed up the tempo to stimulate enthusiasm. Drag the tempo to a crawl for the hyperactive, excited dog.
Do not overuse this exercise with the intelligent student since such repetitive drills tend to cause the dog to lose interest. Change the location and environmental conditions once the straight edge is no longer needed.

Single Mark Extensions
After successful sight memories, we move to simple, single marks thrown by an assistant at ever increasing distances. Begin on short grass in an open field. The assistant attracts the dog's attention and tosses a white bumper at a distance familiar to the dog. As the pup returns from a successful retrieve, the thrower moves out about 15 yards. The drill is repeated with the bumper landing directly in front of the thrower. If the dog hits a distance threshold, repeat the mark at the same distance until the pup achieves consistent success before resuming distance extension.
Next, move the exercise to light cover incorporating ditches, fences, and other obstacles. Remember to deny retrieves (pick up some of the marks) and utilize delays on the release. There are occasions where the immediate release on marking extension drills is beneficial. This may be necessary when the dog has a confidence or ability problem. Quick release minimizes the negative effects of lost concentration but can compromise steadiness. The delayed release must be reestablished quickly. Use hair-trigger releases sparingly only as a problem-solving tool.
Single extension marks should be run on water where dogs can mark by the water splash and also in woodlands which require marking by sound. As ability progresses, the handler walks backwards, lengthening distance as the dog is running out. The thrower walks further away to a different angle as the dog returns to the handler. Distance and perception are now ever changing with each retrieve.
Walking Singles
This is a common marking drill that utilizes a stationary thrower with the dog and the handler moving in an ever-widening circle around the thrower. Confidence is promoted when the thrower ensures that the bumper falls in the same area for each retrieve, yet the dog's distance from the mark and visual perspective have changed.
A similar exercise can be established by placing a bumper thrower in a boat on a lake. The handler and dog change distance and perspective as they move around the water's edge. Use walking singles to enhance marking distance in a variety of locations including plowed ground, grass fields, woodlands, even tall crops like soybean fields and corn.
A variation of the walking single is the walking double. Two throwers provide double marks repeatedly thrown to land in the location of each previous mark as the handler/dog circle and alter distances. This exercise is also an effective pre-season tune-up drill for the experienced dog. As ability progresses, the bumpers are thrown in a variety of locations to the circling dog.
Walk-ups
A beneficial group exercise that not only improves marking but promotes steadiness, obedience, and honoring is the inline walk-up. This is a common exercise used at Wildrose. Two throwers are in front of a line of several dogs and handler (see illustration 2 below). The line moves forward with dogs at heel. Bumpers are thrown as marks into various types of cover and at different angles and distances. Dogs in the advancing line are sent from various sides of the line. This would be similar to an upland game walk up. This is a great weekend participatory exercise for 4 to 8 dogs/handlers.

These are a few simple exercises one can utilize to enhance the marking accuracy of the retriever. Obviously, other skills must exist to ensure marking success of the dog such as the ability to hold lines to the fall area and to deal with obstacles encountered along the way.
In our next feature of the Marking installment, we will examine taking and holding proper initial lines to a mark.
Marking Enhancement Series
Part I- Part II - Part III - Part IV - Part V