Stress Hormones in Mammals and Birds: Comparative Aspects Regarding Metabolism, Excretion, and Noninvasive Measurement in Fecal SamplesRupert Palme, Erich Möstl, Sabry M. El-Bahr et al.|Annals of the New York Academy of Sciences|2005Cited by 588
Measurement of Corticosterone Metabolites in Birds' Droppings: An Analytical ApproachErich Möstl, Rupert Palme, Sophie Rettenbacher|Annals of the New York Academy of Sciences|2005Cited by 277