Schonert, B., I. Byrkjedal, och T. Lislevand. ”Plumage Ornaments in Male Northern Lapwings Vanellus Vanellus May Not Be a Reliable Indicator of Their Mating Success”. Ornis Fennica, vol. 91, nr 2, juli 2014, s. 79–87, doi:10.51812/of.133846.