Why do more hens die during nesting season than during their molt?

Studies show that about thirty percent of hen mallards die during the spring nesting season-a considerably higher mortality rate than during their molt when they are vulnerable and flightless. Why is that? What’s the biggest risk of ducks molting?
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[@jjbmarila]

Very informative and concise video Chris. Nice job.

[@catchyoulateroutdoors8401]

Wow, that’s amazing, great information! GOD Bless all of you!!!!!

[@Mike-vk6mo]

1:30 what are the "cool behavioral tricks that keep them out of harms way the majority of the time" while molting?