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1 December 2014 Has the Number of European Robins Erithacus rubecula Wintering in Spain Decreased?
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Abstract

This paper explores the numerical trends of winter ring recoveries of the European robin Erithacus rubecula in Spain to determine whether the number of extra-Iberian individuals has decreased in recent decades. Results show that despite the increasing numbers of ringed and controlled robins, the number of recoveries of individuals of northern origin has decreased since the 1970s. This pattern is congruent with the northwards retreat of the wintering grounds of some partially migratory bird species that may be due to global warming.

José Luis Tellería "Has the Number of European Robins Erithacus rubecula Wintering in Spain Decreased?," Ardeola 61(2), 389-391, (1 December 2014). https://doi.org/10.13157/arla.61.2.2014.389
Received: 13 February 2014; Accepted: 1 June 2014; Published: 1 December 2014
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