| aploparaksis picae sp. n. (cestoda, hymenolepididae) from the black-billed magpie, pica pica hudsonia (sabine, 1823). | | 1967 | 6067107 |
| neophobia does not account for motoric self-regulation performance as measured during the detour-reaching cylinder task. | the ability to restrain a prepotent response in favor of a more adaptive behavior, or to exert inhibitory control, has been used as a measure of a species' cognitive abilities. inhibitory control defines a spectrum of behaviors varying in complexity, ranging from self-control to motoric self-regulation. several factors underlying inhibitory control have been identified, however, the influence of neophobia (i.e., aversion to novelty) on inhibitory control has not received much attention. neophobi ... | 2018 | 29774435 |
| individual exploratory responses are not repeatable across time or context for four species of food-storing corvid. | exploration is among one of the most studied of animal personality traits (i.e., individual-level behavioural responses repeatable across time and contexts). however, not all species show clear evidence of this personality trait, and this is particularly so for members of the corvidae family. we assessed the exploratory behaviour of four food-caching corvid species: pinyon jays (gymnorhinus cyanocephalus), clark's nutcrackers (nucifraga columbiana), california scrub jays (aphelocoma californica) ... | 2020 | 31941921 |
| are we overestimating risk of enteric pathogen spillover from wild birds to humans? | enteric illnesses remain the second largest source of communicable diseases worldwide, and wild birds are suspected sources for human infection. this has led to efforts to reduce pathogen spillover through deterrence of wildlife and removal of wildlife habitat, particularly within farming systems, which can compromise conservation efforts and the ecosystem services wild birds provide. further, salmonella spp. are a significant cause of avian mortality, leading to additional conservation concerns ... | 2020 | 32003106 |
| new species of onchocercidae (nematoda: filarioidea) from pica pica hudsonia (sabine, 1823). | | 1964 | 14215489 |
| helminth parasites of the black-billed magpie, pica pica hudsonia (sabine, 1823), from southwestern montana. | | 1967 | 6067109 |
| phylogeny of magpies (genus pica) inferred from mtdna data. | we investigated the phylogenetic relationships of species and subspecies of the cosmopolitan genus pica using 813 bp of the mitochondrial genome (including portions of 16s rdna, trna-leu, and nd1). the phylogenetic relationships within the genus pica revealed in our molecular analyses can be summarized as follows: (1). the korean magpie (pica pica sericea) appears basal within the genus pica; (2). the european magpie (pica pica pica) shows a close relationship to the kamchatkan magpie (pica pica ... | 2003 | 13678680 |
| corvids outperform pigeons and primates in learning a basic concept. | corvids (birds of the family corvidae) display intelligent behavior previously ascribed only to primates, but such feats are not directly comparable across species. to make direct species comparisons, we used a same/different task in the laboratory to assess abstract-concept learning in black-billed magpies ( pica hudsonia). concept learning was tested with novel pictures after training. concept learning improved with training-set size, and test accuracy eventually matched training accuracy-full ... | 2017 | 28151701 |
| pattern of visuospatial lateralization in two corvid species, black-billed magpies and clark's nutcrackers. | cerebral lateralization is widespread amongst vertebrate species suggesting advantages are gained by having one of the brain's hemispheres exert dominant control over certain cognitive functions. a recently devised task for assessing lateralization of visuospatial attention by birds (diekamp et al., 2005) has allowed researchers to suggest the corpus callosum may not be necessary for the emergence of such asymmetries. more recently, this task has been adopted to examine the embryonic development ... | 2014 | 25130753 |
| abstract-concept learning in black-billed magpies (pica hudsonia). | relational concepts depend upon relationships between stimuli (e.g., same vs. different) and transcend features of the training stimuli. recent evidence shows that learning abstract concepts is shared across a variety species including birds. our recent work with a highly-skilled food-storing bird, clark's nutcracker, revealed superior same/different abstract-concept learning compared to rhesus monkeys, capuchin monkeys, and pigeons. here we test a more social, but less reliant on food-storing, ... | 2017 | 27503195 |