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Ecstatic display calls of the Adélie penguin honestly predict male condition and breedingsuccess Emma J. Marks 1,3) , Allen G. Rodrigo 1) & Dianne H. Brunton 2) ( 1 The Bioinformatics Institute, University of Auckland, P.O. Box 92019, Auckland, New Zealand; 2 Ecology and Conservation Group
the present work, we tried to learn if food limitation during the nestling-period (i.e. from hatching to fledging) has an effect on the breedingsuccess of Lesser Kestrels in two Israeli colonies, Alona and Jerusalem. This was done by comparing breedingsuccess of nests that were artificially
( Ficedula albicollis ) use public information of the breedingsuccess of other individuals with regard to their migration decisions. In their experimental study, the birds monitored the current reproductive success of others, and their probability of emigration increased both when local offspring quantity
MOBBING BEHAVIOUR, NEST EXPOSURE, AND BREEDINGSUCCESS IN THE AMERICAN ROBIN by IAN G. MCLEAN, JAMES N. M. SMITH and K. GLENNA STEWART1) (Dept. of Zoology, University of Canterbury, Christchurch 1, New Zealand; Dept. of Zoology, University of British Columbia, 6270 University Boulevard
., Schmidt, KaH., wiltschko, w. 2005. pair bond and breedingsuccess in blue Tits Parus caeruleus and great tits Parus major. Ibis 147: 92–108.
Perrins, c.M., birkhead, T.R. 1983. Avian ecology. blackie, glasgow.
Seel, D.c. 1968a. breeding season of the house sparrow and tree sparrow Passer spp
, and separately for both male and female. Breedingsuccess and pair bond duration of pairs was manipulated. After separation from the mate for up to 60 days the subject (female or male) was allowed to court to a new mate for 4 hours. Then the subject was given a choice between the old and the new mate
; Sorato et al., 2016; Nelson-Flower et al., 2018) or are predominately females (Komdeur et al., 1997; Berg, 2004).
The impact that helpers have on the reproductive pair’s breedingsuccess varies among species (Brown, 1987; Cockburn, 1998; Koenig et al., 2016). Moreover, within the same species, helpers
nest boxes defended in uenced total breedingsuccess mainly in the years when male feeding frequency was less important for breedingsuccess per nest. A lower proportion of Cy-males than T- or C-males still held at least a nest box in 1999, three years after they were implanted. As a result, 1
breedingsuccess. Since polygyny occurs frequently in our nest box colonies in Belgium (PINXTEN et al., 1989a, b; PINXTEN & EENS 1990), resulting in a high variation in breedingsuccess between males, the starl- ing is a particularly appropriate subject for a study of this kind. In the second part of this