Energetic trade-offs in migration decision-making, reproductive effort, and subsequent parental care in a long-distance migratory bird

Migratory species trade-off long-distance movement with survival and reproduction, but the spatiotemporal scales at which these decisions occur is relatively unknown. Technological and statistical advances allow fine-scale study of animal decision-making, improving our understanding of possible causes and therefore conservation management. We quantified effects of reproductive preparation during spring migration on subsequent breeding outcomes, breeding outcomes on autumn migration characteristics, and autumn migration characteristics on subsequent parental survival in Greenland white-fronted geese (Anser albifrons flavirostris). These are long-distance migratory birds with a ~50% population decline from 1999 to 2022. We deployed GPS-acceleration devices on adult females to quantify up to five years of individual decision-making throughout the annual cycle. Weather and habitat-use affected time spent feeding and overall dynamic body acceleration (i.e., energy expenditure) during spring ..., , , # Energetic trade-offs in migration decision-making, reproductive effort, and subsequent parental care in a long-distance migratory bird.

Model code and associated data files to quantify the effects of reproductive preparation during spring migration on subsequent breeding outcomes, breeding outcomes on autumn migration characteristics, and autumn migration characteristics on subsequent parental survival in Greenland white-fronted geese (*Anser albifrons flavirostris*).

### Files

* full_annual_cycle_model_categorical.R - Includes all code to read in data files and run the full annual cycle model with breeding outcome as a categorical variable (i.e., successful attempt, failed attempt, deferral).
* full_annual_cycle_model_bernoulli.R - Includes all code to read in data files and run the full annual cycle model with breeding outcome as a Bernoulli variable (i.e., success, fail).
* spring_data.csv- All data for the spring sub-model (summarised to each bird/year/sub-season).
* au...