Classifying avian drinking behaviour: ecological insights and implications in a changing world

Area of Science:

• Ecology
• Animal Behavior
• Climate Change Biology

Background:

• Water availability critically impacts animal behavior, physiology, and distribution.
• Knowledge gaps exist regarding avian drinking dependence and behaviors, especially under climate change.
• Current classifications of avian drinkers versus non-drinkers may oversimplify complex dependencies.

Purpose of the Study:

• To review avian reliance on water consumption and factors influencing drinking habits.
• To highlight the lack of information on drinking behavior in relation to thermal physiology.
• To re-evaluate the classification of avian drinkers and non-drinkers for improved ecological relevance.

Main Methods:

• Literature review of avian water consumption patterns and drinking behaviors.
• Analysis of abiotic and biotic factors influencing drinking habits.
• Critique of dichotomous drinker/non-drinker classifications in climate vulnerability assessments.

Main Results:

• Avian water dependence is a flexible continuum, not a binary trait.
• Species range from specialist non-drinkers to highly dependent drinkers, influenced by environmental pressures.
• A gradient-based approach offers greater ecological relevance than binary classifications.

Conclusions:

• The dichotomous classification of drinkers versus non-drinkers is ecologically limited.
• Understanding drinking as a flexible, context-dependent trait is vital for climate change vulnerability assessments.
• Further research on spatial-temporal trends in water acquisition is needed.