Parenting the chicks

For each chick, get the food provided by each of the parent birds and increase the chick body mass. Compare with the 'optimum chick' to estimate relative body condition and update the chick state. Add up the total hours of attendance for the timestep.

Usage

calc_chickcare(parent, ChickState, Opt_BM_chick, Species)

Arguments

parent

A tibble containing the required variables from the adult birds (BirdID, PairID, feeding_mode, Ereq_intakef_c, colony_h, MF).

ChickState

List holding the current state of all the chicks and metadata.

Opt_BM_chick

The optimum body mass for the chick at this stage of the season (a chick that has received full requirements every day).

Species

List holding the species-specific variables (uses daylength, BM_Chick_mortf and chick_mass_a)

Value

The updated list holding the tibbles for the chick current state.