Table 1 Questions, metrics, and hypotheses underpinning analyses centred on understanding how foraging trip similarity is predicted by temporal and spatial overlap
Question | Metric | Hypothesis |
|---|---|---|
Do con- and heterospecifics make more similar trips when foraging on the same day? | Comparison of trips made by the same and different species on the same versus different days | Individuals make more similar trips to others foraging on the same day (with conspecifics expected to be more similar than heterospecifics), if they use the same local cues of prey location or availability or foraging behaviour of other individuals to determine their own trips. |
Do individuals overlapping at the colony prior to a trip make more similar trips? | Overlap at the colony (yes/no) | Individuals that overlap at the same capture area prior to making a trip will be more similar in their trip if individuals use the same local cues/use information on the direction of departure/return and foraging success of others breeding nearby |
Do individuals foraging out at sea at the same time show more similar foraging trips? | The degree of temporal overlap between trips | Individuals overlapping to a greater degree out at sea will be more similar in their trips if individuals use the same local cues of prey location or availability or information on where others are foraging. |