IN THEIR BREVIA “FLUORESCENT SIGNALING in parrots” (4 Jan., p. 92), K. E. Arnold and coauthors use mate choice experiments to demonstrate that fluorescence in wild-type budgerigars (Melopsittacus undulateus) is probably functional and not incidental. However, there is further evidence to support this hypothesis in the feathers themselves. The green chest feathers of wild-type budgerigars actual...

Mes premiers remtrciements trout aux auteurs des 206 communications th6matiquts et notes de projet, sans qui ces actes n'auraient 6videmment pas vu le jour. / Is oat contribu6 h la qualit6 scientifique et ,5 I'hmuog6t~6it6 pr6sentationntlle de leurs articles en refondant les versions iuitiales soumises an comit6 de programme, ea acceptant de suivre les r~gles de pr6sentation indiqu6es, et en no...

ß & R. I-I. BELTERMAN. 1980. The somatic chromosomes of three parrots: the Kea (Nestor notabilis), the Yellow-headed Parrot (Amazona ochrocephala) and the Grey Parrot (Psittacus erithacus). Acta Zool. Pathol. Antverpiensia 75: 9-18. JENSEN, R. A. C. 1975. Application of a simple chromosome technique in field studies. Emu 74 (Suppl.): 321. Lv, M. R. 1969. A widely applicable technique for direct...

including intraand interspecific interactions (i.e. competition, parasitism and predation), parental condition and behaviour, and weather (Newton 1998, Lima 2009). Temporal patterns, such as the date at which the nesting attempt started (i.e. time of breeding) or the stage of the nesting cycle (i.e. nest age), often influence nest survival (Grant et al. 2005, Lantz & Conway 2009, Nest survival ...

Truth used to be a monolithic monad which was single and absolute. Postmodern truth is contrarily multiple ambiguous. It no longer the divine Form held by Plato, nor does it solely depend on verifiability as suggested Ayer. also viewed cultural phenomenon constructed power according Foucault productive rather than depressive. closely related Nietzsche’s view that there truth, only int...