ABSTRACT. Twenty-five adult and 38 juvenile lesser scaup (Aythya afinis) that were collected in taiga north of Great Slave Lake, Northwest Territories, had eaten almost entirely animal material (99 i: 1 per cent, P < 0.05). Juveniles collected in mid-summer had tended to feed on freeswimming organisms such as Chaoborinae and Conchostraca; whereas juveniles collected in late summer had tended to feed, as did adults in June, on bottom-associated organisms such as amphipods, odonates, and corixids. Sampling aquatic organisms concomitantly with collecting ducks revealed that seeds, copepods, and cladocerans were seldom or never eaten; most other organisms were consumed in proportions that were not significantly different (P < 0.05) from those in the collected samples. RÉSUME. Alimentation estivale du petit milouin dans la taiga subarctique. 25 petits milouins (Aythya afinis) adultes et 38 juvéniles, capturb dans la taiga au nord du Grand lac des Esclaves, dans les Territoires du Nord-Ouest, n'avaient consommé que de la nourriture d'origine animale (99 5 1 %, P < 0.05). Au milieu de l'été, les spécimens juvéniles semblaient plutdt se nourrir d'organismes nageurs comme les Chaoborin6es et les Conchostraces, tandis que vers la fin de l'été, ces mêmes oiseaux, tout comme les adultes en juin, tendaient ? I se nourrir d'organismes du fond: amphipodes, odonates et corixidés. Un échantillonnage des organismes aquatiques effectué au moment de la capture des canards, a révélé que les g r a i n e s , les copépodes et les cladockres n'étaient presque jamais mangés; la consommation de tous les autres organismes se fait dans des proportions qui ne sont pas significativement différentes (P < 0.05) de celles des échantil-lons capturés.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.