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Male territoriality, fighting and assessment of fighting ability in the Australian frog Uperoleia rugosa
The playback of recorded advertisement calls showed that males can assess each others' fighting abilities on the basis of their vocalizations and Dominant frequency was probably the call parameter used in assessment as it was correlated with the weight and hence the fighting ability of the caller, but this hypothesis needs further testing. Expand
Female choice, male strategies and the role of vocalizations in the Australian frog Uperoleia rugosa
There is a strong correlation between the weights, but not the lengths, of males and females found in amplexus; females select mates that are about 70% of their body weight. Expand
Philornis downsi parasitism is the primary cause of nestling mortality in the critically endangered Darwin’s medium tree finch (Camarhynchus pauper)
It is found that parasite intensity would increase with finch body size, and with greater rainfall, and would also correlate with increased nestling mortality, and a trend in the expected direction for parasite intensity and rainfall was found. Expand
Female choice increases fertilization success in the Australian frog, Uperoleia laevigata
Artificial pairing of males and females showed that this choice is adaptive as only females mating with males that were 64–80% of their body weight had most of their clutch fertilized. Expand
Video analysis of host–parasite interactions in nests of Darwin’s finches
In nests with high parasite intensity, nestlings increased self-preening behaviour, ate larvae and stood on top of one another, shedding light on the emergence of anti-parasite behaviour as well as host–parasites relationships after recent parasitism in a naïve host. Expand
Understanding the Birdwatching Tourism Market in Queensland, Australia
ABSTRACT This study explores the diversity of characteristics of birdwatchers from the perspective of recreation specialisation. Using the visitor survey data from birdwatchers in Queensland,Expand
Species Collapse via Hybridization in Darwin’s Tree Finches
Test patterns of hybridization in three sympatric tree finch species that are currently recognized on Floreana Island, Galápagos Archipelago show support for three morphological clusters in the historical tree finches sample (1852–1906), which is consistent with current species recognition. Expand
White Flank Spots Signal Feeding Dominance in Female Diamond Firetails, Stagonopleura guttata
It is concluded that female, but not male, ornamentation was important for inter- and intrasexual food competition, and white plumage can be a signal of dominance in a group-living bird. Expand
Phytohaemagglutinin (PHA) response and bill-hue wavelength increase with carotenoid supplementation in Diamond Firetails (Stagonopleura guttata)
Results show rapid signalling of carotenoid concentration in the integument that complements the longer term signalling potential of feathers. Expand