This dataset includes the bird species, sex, age, and total mercury concentrations in feathers, muscle, liver, and nail tissues.

These data are the raw total mercury (THg) concentrations in whole feathers, feather homogenates, and feather components (i.e., rachis, vane, calamus) that are presented in the Journal Article "Mercury concentrations vary within and among individual bird feathers: A critical evaluation and guidelines for feather use in mercury monitoring programs" in Environmental Toxicology and Chemistry by Peterson et al.

These data are the raw total mercury (THg) concentrations in whole feathers, feather homogenates, and feather components (i.e., rachis, vane, calamus) that are presented in the Journal Article "Mercury concentrations vary within and among individual bird feathers: A critical evaluation and guidelines for feather use in mercury monitoring programs" in Environmental Toxicology and Chemistry by Peterson et al.

Heavy metal contamination (n=17 metals) of feather and tissue samples from live and deceased Anna's hummingbirds (Calypte anna) was evaluated. Feathers taken from live birds are low in sample weight, therefore a novel method was used in feather sample preparation. Feather samples were then analyzed utilizing an inductively coupled plasma mass spectrometry (ICP-MS) assay. In addition, ICP-MS was used to measure heavy metal concentrations in feather and tissue samples from salvaged hummingbird carcasses. Iron, zinc, selenium and mercury concentrations were most commonly elevated in body feathers from live birds with mercury being the metal most likely to be found in elevated concentrations. Because of this, we conducted additional analysis for mercury using atomic absorption spectometry, and this is the mercury data available in this dataset. A strong correlation between total mercury concentrations in feathers and in pectoral muscle was found suggesting that sampling feathers from live hummingbirds may prove a validated, useful, non-lethal sampling method for this species in the wild. These data support the following publication: Nicole A. Mikoni, Robert Poppenga, Joshua T. Ackerman, Janet Foley, Jenny Hazlehurst, Güthrum Purdin, Linda Aston, Sabine Hargrave, Karen Jelks, Lisa A. Tell, Trace element contamination in feather and tissue samples from Anna’s hummingbirds, Ecological Indicators, Volume 80, September 2017, Pages 96-105, https://doi.org/10.1016/j.ecolind.2017.04.053.

Heavy metal contamination (n=17 metals) of feather and tissue samples from live and deceased Anna's hummingbirds (Calypte anna) was evaluated. Feathers taken from live birds are low in sample weight, therefore a novel method was used in feather sample preparation. Feather samples were then analyzed utilizing an inductively coupled plasma mass spectrometry (ICP-MS) assay. In addition, ICP-MS was used to measure heavy metal concentrations in feather and tissue samples from salvaged hummingbird carcasses. Iron, zinc, selenium and mercury concentrations were most commonly elevated in body feathers from live birds with mercury being the metal most likely to be found in elevated concentrations. Because of this, we conducted additional analysis for mercury using atomic absorption spectometry, and this is the mercury data available in this dataset. A strong correlation between total mercury concentrations in feathers and in pectoral muscle was found suggesting that sampling feathers from live hummingbirds may prove a validated, useful, non-lethal sampling method for this species in the wild. These data support the following publication: Nicole A. Mikoni, Robert Poppenga, Joshua T. Ackerman, Janet Foley, Jenny Hazlehurst, Güthrum Purdin, Linda Aston, Sabine Hargrave, Karen Jelks, Lisa A. Tell, Trace element contamination in feather and tissue samples from Anna’s hummingbirds, Ecological Indicators, Volume 80, September 2017, Pages 96-105, https://doi.org/10.1016/j.ecolind.2017.04.053.

We assessed total mercury concentrations in breast feathers of diurnal North American raptors collected at migration monitoring stations. We sampled raptor feathers from 9 species in the Pacific Flyway and compared species, sex, date, and flyway effects on mercury concentrations. We also explored year effects on 3 species of raptors in the Pacific Flyway during 13-years (2002-2014). Finally, we compared mercury concentrations in merlin among 4 continental flyways.

We assessed total mercury concentrations in breast feathers of diurnal North American raptors collected at migration monitoring stations. We sampled raptor feathers from 9 species in the Pacific Flyway and compared species, sex, date, and flyway effects on mercury concentrations. We also explored year effects on 3 species of raptors in the Pacific Flyway during 13-years (2002-2014). Finally, we compared mercury concentrations in merlin among 4 continental flyways.

This dataset includes bird species, invertebrate order and family, sample identification codes, collection date, latitude, longitude, site name, bird age, invertebrate life stage, invertebrate trophic group, carbon and nitrogen stable isotopes in birds and invertebrates, total mercury concentrations in bird blood, and methylmercury concentrations in composite invertebrates.

This dataset includes bird species, invertebrate order and family, sample identification codes, collection date, latitude, longitude, site name, bird age, invertebrate life stage, invertebrate trophic group, carbon and nitrogen stable isotopes in birds and invertebrates, total mercury concentrations in bird blood, and methylmercury concentrations in composite invertebrates.

This dataset includes bird species, invertebrate order and family, sample identification codes, capture date, latitude, longitude, habitat, site name, bird age, total mercury concentrations in bird blood, and methylmercury concentrations in whole body aquatic invertebrates.