Classical polyandry found in the three-toed woodpecker Picoides tridactylus
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- Pechacek, P., Michalek, K.G., Winkler, H. et al. J Ornithol (2006) 147: 112. doi:10.1007/s10336-005-0026-4
We report two cases of simultaneous, social polyandry in the three-toed woodpecker Picoides tridactylus found in Berchtesgaden National Park, Germany during an 11-year study. The first case was between two neighbouring pairs in 2003. A female incubated both of her clutches during a period of at least 8 days. The second case was in 2004 between a widowed male and a female of a neighbouring pair. This time, a female divided parental care between her two clutches during a period of at least 27 days. We hypothesise that social polyandry in the three-toed woodpecker may be linked to the parental quality of the first male.