Correction to: J Ornithol (2016) 157:861–873 https://doi.org/10.1007/s10336-016-1328-4

In the original publication of the article, the linear discriminate equation (1) was mistyped. We provide below the correct equation to use to discriminate male and female in Ivory Gull Pagophila eburnea (Phipps, 1774).

$$ D = - 38.435\text{ + }0.005 \times V_{\text{Weight}} + 0.268 \times V_{\text{Wing}} + 0.136 \times V_{\text{Skull}} + 1.203 \times V_{\text{Gonys}} . $$
(1)

According to this equation, a bird is classified as male when D > 0 and as female when D < 0.