Most classical preyâpredator models do not take into account the behavioural structure of the population. Usually, the predator and the prey populations are assumed to be homogeneous, i.e. all individuals behave in the same way.ence, there is only a positive nontrivial equilibrium when. This is the dimorphic case where the predator population consists of hawk and dove predators. There are also the two trivial equilibria, the monomorphic cases, (pDH*,pDD*)=(0,pD*) (only doves) and. (only hawks).
Wood Shavings. White wood shavings (dust extracted, not sawdust) is one of the most popular bedding materials for chickens, ducks and other poultry as they are relatively cheap, very absorbent and easy to use.Shavings keep smells down and reduce ammonia in the air from droppings that can cause respiratory damage and eye problems.t is best to use straw in nest boxes and not for bedding. I would only consider using straw if I had a plentiful / cheap supply of it. Chopped straw is the most convenient to use. A major advantage is that it will compost quickly.
Rooster Sheave Assembly. The rooster sheave is a pin-on rigging accessory with a composite sheave identical to the boom tip sheaves. It is required if rigging is more than six parts of line, or when an auxiliary winch is used. A second ATB transmitter can easily be bolted to it when used with an auxiliary winch. It is a complete install kit with easily removable pins. Auxiliary Winch Option with Rooster Sheave. This option gives the operator a second winch to operate as a tag line. The second winch is a 12000 lb single speed unity, mounted directly behind the main winch. A down haul bail is included.