| multi-isotopic (δ2h, δ13c, δ15n) tracing of molt origin for red-winged blackbirds associated with agro-ecosystems. | we analyzed stable-hydrogen (δ2h), carbon (δ13c) and nitrogen (δ 15n) isotope ratios in feathers to better understand the molt origin and food habits of red-winged blackbirds (agelaius phoeniceus) near sunflower production in the upper midwest and rice production in the mid-south of the united states. outer primary feathers were used from 661 after-second-year (asy) male blackbirds collected in minnesota, montana, north dakota and south dakota (spring collection), and arkansas, louisiana, missis ... | 2016 | 27846302 |
| mercury concentrations in eggs of red-winged blackbirds and tree swallows breeding in voyageurs national park, minnesota. | most investigations of the environmental effects of mercury (hg) have focused on aquatic food webs that include piscivorous fish or wildlife. however, recent investigations have shown that other species, including passerine songbirds, may also be at risk from exposure to methylmercury (mehg). we quantified hg concentrations in eggs of two species of songbirds, red-winged blackbirds (agelaius phoeniceus) and tree swallows (tachycineta bicolor), nesting in voyageurs national park, minnesota, usa. ... | 2016 | 26801652 |