The young pheasants (poults) arrive in late August, but the date is unpredictable, as the first three days of their stay are key. If it is bad weather, they will be reluctant to feed, and will become susceptible to disease. If predators are constantly present in and around the pen, then again they will not feed, and the stress will only exacerbate their problems. After this initial period, they are still vulnerable, but will have recovered from the journey and will be a little more settled. As with all animals, the more mature they become, the more their chance of survival.
Over the ensuing weeks, the pens will be visited at least twice daily. The visitors (Mark, or the two other workers on the estate, the farmer and his assistant) make the same whistling noises every time, so the poults become accustomed to the noise and associate it with food and safety. This is something that comes in handy later in the year - Mark’s whistling easing their concerns, before they are pushed over waiting guns.