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ORIGINAL PAPER Reproductive strategy and singing activity: blue tit and great
 

Summary: ORIGINAL PAPER
Reproductive strategy and singing activity: blue tit and great
tit compared
Valentin Amrhein & Lars Erik Johannessen &
Lena Kristiansen & Tore Slagsvold
Received: 6 September 2007 /Revised: 5 March 2008 /Accepted: 8 April 2008 /Published online: 4 June 2008
# Springer-Verlag 2008
Abstract The costs and benefits of bird song are likely to
vary among species, and different singing patterns may
reflect differences in reproductive strategies. We compared
temporal patterns of singing activity in two songbird
species, the blue tit (Cyanistes caeruleus) and the great tit
(Parus major). The two species live side by side year
round, and they have similar breeding ecology and similar
rates of extra-pair paternity. However, they differ in two
aspects of reproductive strategy that may have an influence
on song output: blue tits are facultatively polygynous and
have a fairly short breeding season with almost no second
broods, whereas great tits are socially monogamous but
more commonly raise second broods. We found that great

  

Source: Amrhein, Valentin - Zoologisches Institut, Universitšt Basel

 

Collections: Environmental Sciences and Ecology