Skewed Age Ratios of Breeding Mallards in the Nebraska Sandhills.

Autor: Cunningham, Zach J.1, Powell, Larkin A.1, Vrtiska, Mark P.2, Stephens, Scott E.3, Walker, Johann A.4
Zdroj: American Midland Naturalist. Apr2016, Vol. 175 Issue 2, p280-285. 6p.
Databáze: Academic Search Ultimate