The effect of flicker from fluorescent lights on mate choice in captive birds

The visual systems of birds are hypothesized to have higher temporal resolution than those of humans, suggesting that they may be able to perceive the flicker emitted from conventional low-frequency fluorescent lights (LF; 100 Hz in Europe, 120 Hz in the U.S.A.). These lights are commonly used in the housing of captive birds and this may affect both their welfare and performance in experiments. We carried out mate choice experiments on European starlings, Sturnus vulgaris, under both low- and high-frequency fluorescent lights (HF; > 30 kHz, at which flicker is imperceptible). Indicators of male condition and size, together with the reflectance spectra and length of the males' throat feathers, were also recorded to ascertain which variables correlated with female preference. Females ranked males consistently under HF, but not LF, lighting, and individual females chose different males under the two lighting types. Under HF lighting, females chose to spend more time with males that had longer throat feathers. The flicker rate of the light clearly affected the choices made by the females, possibly because of nonspecific stress effects or decreased discrimination ability. Our results imply that careful interpretation of mate choice experiments is needed, especially with regard to the lighting types used, to elucidate the real cause behind any variation shown. (c) 2006 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.

Evaluating the impact of an environmental education programme; an empirical study in Mexico.

This study draws on information from 11 in-depth interviews, two focus groups and 72 written questionnaires to evaluate an extra-curricular environmental education programme on forestry designed for preparatory school students from a small rural community in Mexico. Specifically, the study assessed the impact of the programme on the ecological knowledge of 72 students. Qualitative feedback suggests that students learnt about forestry, acquired greater awareness of the importance of conservation for the local environment and enjoyed the participatory teaching methods used in the programme. Quantitative results show a positive and significant association between the number of times a student participated in the programme and the student’s ecological knowledge. Students who participated in the programme once had a 16.3% higher knowledge on ecological concepts and knew, on average, 1.5 more local forest plants than students who never attended it (p<.001). Findings suggest that the inclusion of participatory environmental education programmes in preparatory schools would improve the acquisition of ecological knowledge. Further research could consider the consistency of the findings by replicating participatory methods presented here and by using an experimental research design.

Wry-necked memory : the matter of Ireland in cutting green hay and memory Ireland, and the poems of the pattern.

This paper examines the matter of Ireland in Buckley’s two memoirs, Cutting Green Hay (1983) and Memory Ireland (1985), and the poems of The Pattern (1979), in order to revisit critically the ways in which he constructs himself as a diasporic Irish-Australian, a participant in the most remote Gaeltacht. It raises questions of victimhood, of similar and different experience of being at the mercy of the land, and of his re-engineering of the place of the political in poetry. It argues that Buckley’s agonized positioning as Ireland’s ‘guest/foreigner/son’ was a project that was doomed by its utopianism, and that, obsessed as he became with Ireland, the angst within had little to do with ‘the Ireland within’ or without. The paper suggests that the poet’s slow and unacknowledged abandonment in his Irish period of a key tenet of modernism, its distrust of propaganda and the political, is in itself a new formation which had some continuity with the radicalism of his thinking during the formative years of the revolutionary catholic apostolate he led both at the University of Melbourne and nationally. It also points to the deployment of an ancient medieval Irish trope, that of the ocean (rather than a landmass) linking a dispersed community, as one of the ways the poetry effects a resolution of the issues of being ‘Irish’ in a remote country.