Foot preferences during resting in wildfowl and waders

Area of Science:

• Ethology
• Ornithology
• Animal Behavior

Background:

• Bird footedness, or lateralization of paw preference, has been observed in species like parrots and chickens.
• The specific direction and function of footedness (e.g., for feeding vs. perching) in birds remain largely unclear.
• Existing research has not definitively established whether observed asymmetries relate to specific behaviors like postural control.

Purpose of the Study:

• To investigate footedness in wildfowl and waders during a specific behavioral task: roosting on one foot.
• To determine if there is a consistent directional preference (left or right foot) in these bird species.
• To explore potential links between footedness and postural control mechanisms in birds.

Main Methods:

• Observation of foot preference in four species (Avocet, Northern Shoveller, Oystercatcher, Eurasian Curlew) during ground roosting.
• Data collection occurred in 2004 and 2006, focusing on a single, consistent behavior.
• Comparison of foot use for roosting across multiple species to identify significant preferences or lack thereof.

Main Results:

• Avocet, Northern Shoveller, Oystercatcher, and Eurasian Curlew demonstrated a significant right-footed preference during roosting.
• Twenty-one other observed species exhibited no significant foot preference.
• The findings suggest that footedness in certain bird species may be influenced by the demands of postural control.

Conclusions:

• Asymmetries in preferential foot use in birds may be triggered by a preference during postural control.
• This study provides evidence for right-footedness in specific wildfowl and wader species during roosting.
• Further research is warranted to explore the functional significance of footedness across diverse avian behaviors.