Calculate the foraging strategy for the timestep

Given information about one flight and the time available, this function determines the foraging strategy chosen by an individual bird.

Usage

calc_strategy(
  BM_condition,
  BM_adult_abdn,
  fmode,
  Fg,
  tf,
  tcapt,
  maxf,
  ts,
  tc,
  tm,
  ttotal
)

Arguments

BM_condition

The relative body condition of the bird which may influence the strategy

BM_adult_abdn

The relative body condition at which the adult abandons the chick

fmode

The feeding mode of the individual in the previous timestep (numeric())

Fg

The total amount of food to be gathered across multiple flights within the timestep, (numeric())

tf

The time it takes to fly the trip once, (numeric())

tcapt

A look-up giving the amount of food captured after t minutes, (tibble, 2 variables, tmin, captured_g)

maxf

The maximum number of flights permitted, (integer)

ts

The minimum time that must be spent at sea, (numeric())

tc

The optimum time to be spent at the colony, (numeric())

tm

The minimum time that can be spent at the colony (numeric())

ttotal

The length of a 'day' for this species in hours, giving the maximum time in which to fit the flights, (integer)

Value

A tibble with seven variables; the number of flights, total time spent foraging, total time spent flying, total grams of food captured, the time spent at the colony and at sea, and the feeding mode that was followed.