Alain Caizergues

The paper estimates harvest probabilities of three European duck species using reward rings, finding high reporting probabilities and initial high hunting mortality that declines over time.

The paper uses a demographic model to show that productivity, particularly nest survival, drives population decline and male-biased sex structure in Common pochard.

The paper introduces a non-invasive method using apparent sex ratios to estimate adult survival and recruitment rates in waterfowl populations.