| a presumably new fact relative to the cedar waxwing (ampelis cedrorum), with remarks upon the importance of a thorough knowledge of first plumages. | | 1893 | 17833332 |
| diplochory in western chokecherry: you can't judge a fruit by its mesocarp. | western chokecherry (prunus virginiana var. demissa, rosaceae) is dispersed by frugivorous birds and carnivores, but it has large seeds that are potentially attractive to rodents that could act as seed predators and dispersers. here, we quantify the benefits of primary dispersal by birds and secondary dispersal by scatter-hoarding rodents. in the fall, avian frugivores (mostly american robins, turdus migratorius, and cedar waxwings, bombycilla cedrorum) consumed 87% of the fruit crop and dispers ... | 2011 | 20842383 |
| feeding behavior-related toxicity due to nandina domestica in cedar waxwings (bombycilla cedrorum). | dozens of cedar waxwings were found dead in thomas county, georgia, usa, in april 2009. five of these were examined grossly and microscopically. grossly, all the examined birds had pulmonary, mediastinal, and tracheal hemorrhages. microscopically, several tissues and organs were diffusely congested and hemorrhagic. congestion and hemorrhage were marked in the lungs. intact and partly digested berries of nandina domestica thunb. were the only ingesta found in the gastrointestinal tract of these b ... | 2010 | 21197466 |
| a review of the mite subfamily harpirhynchinae (acariformes: harpirhynchidae)--parasites of new world birds (aves: neognathae). | mites of the subfamily harpirhynchinae (acariformes: cheyletoidea: harpirhynchidae) associated with neognathous birds (aves: neognathae) in the new world are revised. in all, 68 species in 8 genera are recorded. among them, 27 new species and 1 new genus are described as new for science: harpyrhynchoides gallowayi bochkov, oconnor and klompen sp. nov. from columba livia (columbiformes: columbidae) from canada (manitoba), h. zenaida bochkov, oconnor and klompen sp. nov. from zenaida macroura (col ... | 2015 | 26624161 |
| bird-window collisions: different fall and winter risk and protective factors. | to reduce bird fatalities from millions of window collisions each year in north america, it is important to understand how design and landscape elements relate to collision risk. the current study extends prior research that found that buildings near ornamental pear trees (prunus calleryana) and buildings with mirrored windows significantly increased odds of collisions among eight buildings on the university of utah campus in winter. the previous study found bird-friendly glass was not related t ... | 2020 | 32596060 |
| winter bird-window collisions: mitigation success, risk factors, and implementation challenges. | millions of birds die in bird-window collisions in the united states each year. in specialized test settings, researchers have developed methods to alter window designs to mitigate collisions. however, few published studies provide pretest and posttest evaluations of mitigation treatment areas and untreated control areas on existing buildings. we initially monitored bird-window collisions at a single building on the university of utah campus in salt lake city, utah, usa, during winter 1 (novembe ... | 2019 | 31534854 |
| the membrane-bound intestinal enzymes of waxwings and thrushes: adaptive and functional implications of patterns of enzyme activity. | cedar waxwings (bombycilla cedrorum) feed predominantly on fruits that are rich in simple sugars and low in nitrogen, supplementing this diet with arthropod prey during the summer months as well as flowers and tree sap in springtime. in contrast, thrushes feed extensively on fatty, protein-rich invertebrate prey, supplemented with sugary and lipid-rich fruits. simple sugars and fats are digested and/or absorbed by distinctly different physiological mechanisms, which suggests the possibility of c ... | 2001 | 11436143 |
| persistence of host defence behaviour in the absence of avian brood parasitism. | the fate of host defensive behaviour in the absence of selection from brood parasitism is critical to long-term host-parasite coevolution. we investigated whether new world bohemian waxwings bombycilla garrulus that are allopatric from brown-headed cowbird molothrus ater and common cuckoo cuculus canorus parasitism have retained egg rejection behaviour. we found that egg rejection was expressed by 100 per cent of bohemian waxwings. our phylogeny revealed that bohemian and japanese waxwings bomby ... | 2011 | 21493623 |
| test, rejection, and reformulation of a chemical reactor-based model of gut function in a fruit-eating bird. | we explored modulation of retention time in cedar waxwings (bombycilla cedrorum) by feeding them diets varying in hexose concentration. our goals were to (1) test three predictions of a chemical reactor-based model of how guts might respond optimally to diet shifts; (2) determine whether modulation of retention time can occur quickly, thereby facilitating rapid changes in diet; (3) tease apart the relative influence of ingestion rate and nutrient concentration on retention time; and (4) examine ... | 1999 | 10222331 |
| astaxanthin in the cedar waxwing. | the pigment on the secondary feathers of the cedar waxwing (bombycilla cedrorum) is deposited as an amorphous layer upon a supporting medullary structure. the pigment was extracted with alkali and analyzed by chromatographic and spectrophotometric methods. the results indicate that the pigment is astacene (3,3',4,4'-tetra-keto-beta-carotene), the oxidation product of astaxanthin. | 1963 | 17812506 |
| avian cholera in cedar waxwings in ohio. | | 1972 | 5007897 |
| ecological and evolutionary implications of energy and protein requirements of avian frugivores eating sugary diets. | to assess how the high-sugar/low-protein content of fruit diets affects digestive function and nutrition of frugivorous birds, i compared intake, passage rate, sugar utilization, protein requirements, and mass changes of cedar waxwings (bombycilla cedrorum), american robins (turdus migratorius), and wood thrushes (hylocichla mustelina) fed synthetic diets simulating the range of sugar (6.6%, 12.4%, and 22.0% solutes) and protein (4.5%, 3.0%, and 1.5% of dry matter) content of bird-dispersed frui ... | 1998 | 9798248 |
| suspected ethanol toxicosis in two wild cedar waxwings. | several wild cedar waxwings (bombycilla cedrorum) fell from a rooftop following ingestion of overwintered hawthorn (crataegus sp.) pommes. at necropsy, there was pericardial hemorrhage, although no microscopic abnormalities were found. ethanol was present in crop contents (380 ppm) and in the livers (238 and 989 ppm). the cause of death was attributed to hemorrhage following a fall precipitated by ethanol intoxication. | 1990 | 2369387 |
| cedar waxwing. | | 1893 | 17753977 |
| test of a digestion optimization model: effects of costs of feeding on digestive parameters. | we tested predictions of a chemical reactor model of digestion by manipulating the short-term costs of feeding and then measuring the effect on digestive parameters. we compared residence time of digesta and extraction efficiency of glucose in cold-acclimated waxwings (bombycilla cedrorum) feeding ad lib. and in birds whose costs of feeding were increased through the addition of intervals of time when they received no food. such a feeding schedule simulated the ecological situation in which a fr ... | 1998 | 9548649 |
| the death of hundreds of cedar-waxwings. | | 1936 | 17770564 |
| cedar waxwings. | | 1893 | 17773919 |