To Flee or Not to Flee: How Age, Reproductive Phase, and Mate Presence Affect White Stork Flight Decisions

Area of Science:

• Behavioral Ecology
• Avian Biology
• Wildlife Conservation

Background:

• Survival necessitates effective threat assessment and response in wild animals.
• Parental birds face a critical decision: flee from threats or delay flight to protect nests.

Purpose of the Study:

• To investigate how age, reproductive stage, and mate presence affect flight initiation distance (FID) and nest recess duration in white storks.
• To understand the trade-offs influencing parental decisions in response to threats during breeding.

Main Methods:

• Utilized a generalized additive mixed model (GAMM) for data analysis.
• Examined correlations between FID, nest recess duration, and factors like age, reproductive stage, and mate presence in white storks.

Main Results:

• Significant correlations were found between FID and age, reproductive stage, and mate presence.
• Nest abandonment duration generally aligned with FID, with age being an exception.
• White storks showed increased risk-taking when offspring were most vulnerable.

Conclusions:

• Parental age, offspring value, and mate presence dynamically influence white stork flight decisions.
• The presence of a mate may indicate sexual conflict over parental care, leading to earlier nest departure.
• These findings enhance our understanding of avian behavioral adaptations and complex parental decision-making.