Globally threatened Lesser White-fronted Goose Anser erythropus nesting in association with Peregrine Falcons Falco peregrinus in southern Yamal, Russia
Knowledge about the breeding biology and potential threats on the breeding grounds is important for conservation of threatened species. The main breeding range of the Lesser White-fronted Goose Anser erythropus (LWFG) forms a belt along the southern part of the Russian arctic and, although their main nesting habitat has been described based on observations of broods or pairs with breeding behaviour, only very few observations of confirmed nests have been reported. Since 2006, we have encountered 36 nests of this rare species in the Erkuta River basin (in the southern part of the Yamal Peninsula), described their nesting habitat and found that 71% of nests were associated with territorial Peregrine Falcons Falco peregrinus. Such a nest association, already described for other Siberian wildfowl, is assumed to increase the nest survival of LWFG in areas with high predation rates, but also raises indirect conservation concerns since the Peregrine Falcon is itself a rare species in many regions of Russia.
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