What scatter-hoarding animals have taught us about small-scale navigation.

Area of Science:

• Ethology
• Comparative Psychology
• Neuroscience

Background:

• Small-scale navigation relies on diverse cues: beacons, landmarks, compasses, and geometric properties.
• Scatter-hoarding animals (birds, rodents) present a unique model for studying spatial memory and navigation due to their need to cache and retrieve numerous food items accurately over time.

Purpose of the Study:

• To review and synthesize current knowledge on cue utilization for spatial navigation in scatter-hoarding birds and rodents.
• To explore differences in cue encoding strategies between scatter-hoarding birds and rodents, and in comparison to other animal groups.

Main Methods:

• Literature review synthesizing existing research on spatial navigation and cue use in scatter-hoarding animals.
• Analysis of studies examining the influence of local vs. global cues, geometric rules, external compasses (e.g., Sun), and enclosure shape on cache retrieval.

Main Results:

• Scatter-hoarding animals exhibit high flexibility in encoding spatial information for navigation.
• Both birds and rodents utilize a range of cues, with notable differences observed in their specific encoding strategies.
• The shape of experimental environments significantly impacts cache relocation success.

Conclusions:

• Scatter-hoarding animals demonstrate adaptable navigation strategies, employing diverse cues based on environmental context and species-specific adaptations.
• Further research is needed to fully elucidate the nuanced differences in spatial encoding between scatter-hoarding birds and rodents and to explore novel research avenues.