PubAg

Main content area

You searched for: Subject "feathers" Remove constraint Subject: "feathers"
Start Over

Search

3,006  Search Results

« Previous | 1 - 20 of 3,006 |
Number of results to display per page

Search Results

1. Wing‐feather moult phenotypes differ between the preformative and prealternate episodes and along passerine phylogeny

Author:
Guallar, Santi; Jovani, Roger
Source:
TheIbis 2020 v.162 no.3 pp. 778-786
ISSN:
0019-1019
Subject:
feathers,   etc   ; Neotropics; Passeriformes; birds; molting; phenotype; phylogeny;     Show all 7 Subjects
Abstract:
... Passerine wing‐feather moult has been studied historically in terms of its intensity, duration, timing and extent. However, little is known about variation of wing‐moult phenotypes (i.e. the identity of moulted wing feathers in a given individual) within species, among moult episodes and in relation to passerine phylogeny. Here we studied 5373 wing‐moult cards from 285 Holarctic and 155 Neotropica ...
DOI:
10.1111/ibi.12798

2. Estimation of moult duration in birds with suspended moults: the case of the Red Crossbill and its relation to reproduction

Author:
Fernández-Eslava, Blanca; Alonso, Daniel; Galicia, David; Arizaga, Juan
Source:
Journal of ornithology 2020 v.161 no.2 pp. 481-490
ISSN:
2193-7192
Subject:
feathers,   etc   ; Loxia curvirostra; birds; breeding; models; molting; summer;     Show all 7 Subjects
Abstract:
... Suspended moult is a relatively common phenomenon in birds, but it has remained relatively ignored for a long time in studies dealing with moulting process. Furthermore, the new and increasing number of models used to estimate moult duration systematically omit the fact that suspended moults can occur and that they significantly alter parameter estimates. Taking suspended moults into account is cr ...
DOI:
10.1007/s10336-019-01739-7

3. Phoretic oribatids (Acari, Oribatida) as bird bioindicators? Insights from the site of Tabacalera (Gijón, N. Spain, 6th-7th centuries AD)

Author:
Llorente-Rodríguez, Laura; González-Ibáñez, Andrea; Morales-Muñiz, Arturo
Source:
Quaternary international 2020 v.543 pp. 93-98
ISSN:
1040-6182
Subject:
feathers,   etc   ; Sarcoptiformes; archaeology; birds; breeding; exoskeleton; mites; nests; sclerotization; Spain;     Show all 10 Subjects
Abstract:
... Bird remains are rare on archaeological sites yet often crucial to address a multitude of questions, both cultural and biological. In this paper we argue that oribatid mites living on bird feathers, scales and nests may prove useful to infer not only bird presence but occasionally their breeding at a given site in the absence of their remains. Although oribatids are for all purposes stationary, a ...
DOI:
10.1016/j.quaint.2020.03.036

4. Chiral iminophosphorane catalyzed asymmetric phenylselenylation of 3-substituted oxindoles

Author:
Zhang, Yanxia; Wu, Xin-Yan; Han, Jianwei; Wong, Henry N.C.
Source:
Tetrahedron letters 2020 v.61 no.10 pp. 151559
ISSN:
0040-4039
Subject:
feathers,   etc   ; catalytic activity; chemical reactions; chemical structure; enantioselectivity; organic compounds;     Show all 6 Subjects
Abstract:
... Organocatalyzed asymmetric phenylselenylation of 3-substituted oxindoles was achieved with chiral iminophosphoranes. A wide range of phenylselenylated oxindoles were synthesized in good to excellent yields (80–99%) and up to 97% ee under mild conditions. The procedure feathers simple separation and scale up to semi-gram without loss of enantioselectivity. ...
DOI:
10.1016/j.tetlet.2019.151559

5. Remigial and rectricial molt sequences in a captive Ryukyu Scops-Owl (Otus elegans)

Author:
Akatani, Kana; Takagi, Masaoki
Source:
TheWilson journal of ornithology 2020 v.131 no.4 pp. 828-833
ISSN:
1559-4491
Subject:
feathers,   etc   ; Otus; cages; captive animals; energy; islands; juveniles; molting; Japan;     Show all 9 Subjects
Abstract:
... We describe the remigial and rectricial molt sequences of a Ryukyu Scops-Owl (Otus elegans) held in captivity on Minami-daito Island, Nansei Islands, southern Japan. The owl completely shed its remiges and rectrices during its preformative molt as well as during its definitive prebasic molts in 3 consecutive years. In the preformative molt, the primaries were all shed during October, November, and ...
DOI:
10.1676/1559-4491-131.4.828

6. Birds of a feather don’t always flock together: variation in molt origins and movement patterns of winter finches in Ontario

Author:
Hannah, Kevin C.; Kardynal, Kevin J.; Hobson, Keith A.
Source:
Journal of ornithology 2020 v.161 no.3 pp. 609-620
ISSN:
2193-7192
Subject:
feathers,   etc   ; Coccothraustes; breeding; color; flocks; hydrogen; isotopes; migratory behavior; molting; winter; wintering grounds; Arctic region; Ontario;     Show all 13 Subjects
Abstract:
... For irruptive or facultative migrants in the subfamily Carduelinae, the winter finches, seasonal movements are extensive but have been poorly described in North America. We used stable hydrogen isotope measurements of feathers (δ²Hf) collected in three regions in Ontario, Canada, during the winters of 2014–15 and 2015–16 to infer potential breeding origins of four species. We also deployed color b ...
DOI:
10.1007/s10336-020-01760-1

7. Construction of Rechargeable Protein Battery from Mixed-Waste Processing of Fish Scales and Chicken Feathers

Author:
Hussain, Z.; Sardar, A.; Khan, K. M.; Naz, M. Y.; Sulaiman, S. A.; Shukrullah, S.
Source:
Waste and biomass valorization 2020 v.11 no.5 pp. 2129-2135
ISSN:
1877-2641
Subject:
feathers,   etc   ; batteries; chickens; electrolytes; fish; hydrolysis; light emitting diodes; microorganisms; poultry manure; scales (integument); sodium hydroxide;     Show all 11 Subjects
Abstract:
... This study deals with valorization of the protein-rich fish and poultry waste. Since fish scales and chicken feathers are hard-to-degrade by the scavenger microbes, they were hydrolyzed into a source material for construction of rechargeable protein batteries. Both wastes were dissolved in sodium hydroxide (NaOH) solution to form oxidizing and reducing halves of the battery. NaOH not only worked a ...
DOI:
10.1007/s12649-018-0535-z

8. Experimental tail shortening affects feeding rate depending on original tail length in female barn swallows Hirundo rustica gutturalis

Author:
Hasegawa, Masaru; Arai, Emi; Nakamura, Masahiko
Source:
Journal of ethology 2020 v.38 no.2 pp. 179-184
ISSN:
0289-0771
Subject:
feathers,   etc   ; Hirundo rustica; aerodynamic properties; aerodynamics; data collection; females; sexual selection;     Show all 7 Subjects
Abstract:
... Long tail feathers of the barn swallow Hirundo rustica are a classic example of an intersexually selected trait, but previous aerodynamic analyses indicate that the tail feather is only 10–12 mm longer than the aerodynamic optimum even in the nominate subspecies with long tails. Here, by experimentally shortening female tail length, we studied the feeding cost of long tail feathers in Japanese bar ...
DOI:
10.1007/s10164-019-00637-y

9. Characterization of aortic and brachiocephalic filariasis by Filarioidea sp (Nematoda:Spirurida:Filarioidea) in Mexican ramphastids

Author:
Sanchez-Godoy, F.D.; Juarez-Murguia, A.; Hernandez-Castro, R.; Xicohtencatl-Cortes, J.; Martinez-Hernandez, F.; Hernandez-Velasco, X.
Source:
International journal for parasitology 2020 v.11 pp. 282-286
ISSN:
2213-2244
Subject:
feathers,   etc   ; Ramphastidae; Spirurida; arteries; aviaries; cell proliferation; death; filariasis; metaplasia; mortality; seizures; wild birds; Mexico;     Show all 13 Subjects
Abstract:
... The manuscript presented herein documents the findings of filaria nematodes in 5 keel-billed toucans, and one emerald toucanet, originated from 2 private aviaries in Mexico City during two years. The birds displayed ruffled feathers, depression, inability to perch, convulsions, and sudden death. Furthermore, thickened wall of the aortic and brachiocephalic arteries, with connective tissue prolifer ...
DOI:
10.1016/j.ijppaw.2020.03.003
PubMed:
32211290
PubMed Central:
PMC7083752

10. Early-life exposure to artificial light at night elevates physiological stress in free-living songbirds☆

Author:
Grunst, Melissa L.; Raap, Thomas; Grunst, Andrea S.; Pinxten, Rianne; Parenteau, Charline; Angelier, Frédéric; Eens, Marcel
Source:
Environmental pollution 2020 v.259 pp. 113895
ISSN:
0269-7491
Subject:
feathers,   etc   ; Parus major; body condition; corticosterone; fledglings; nest boxes; nestlings; survival rate; telomeres;     Show all 9 Subjects
Abstract:
... Artificial light at night (ALAN) can disrupt adaptive patterns of physiology and behavior that promote high fitness, resulting in physiological stress and elevation of steroid glucocorticoids (corticosterone, CORT in birds). Elevated CORT may have particularly profound effects early in life, with the potential for enduring effects that persist into adulthood. Research on the consequences of early- ...
DOI:
10.1016/j.envpol.2019.113895

11. Feather corticosterone in Northern Bald Ibis Geronticus eremita: a stable matrix over time able to predict reproductive success

Author:
Monclús, Laura; Tallo-Parra, Oriol; Carbajal, Anais; Quevedo, Miguel Angel; Lopez-Bejar, Manel
Source:
Journal of ornithology 2020 v.161 no.2 pp. 557-567
ISSN:
2193-7192
Subject:
feathers,   etc   ; Geronticus eremita; biomarkers; birds; corticosterone; health status; molting; reproductive success;     Show all 8 Subjects
Abstract:
... Measuring corticosterone concentrations in feathers (FCC) has been increasingly used as an integrated index of bird’s response to stressors, offering valuable insights into subsequent carry-over effects. However, it is still unclear to what extent corticosterone levels deposited in feathers during the moulting period relate to individual physiology in high-energetic demanding situations. In additi ...
DOI:
10.1007/s10336-019-01741-z

12. Interspecific variation in deterioration and degradability of avian feathers: the evolutionary role of microorganisms

Author:
Azcárate‐García, Manuel; González‐Braojos, Sonia; Díaz‐Lora, Silvia; Ruiz‐Rodríguez, Magdalena; Martín‐Vivaldi, Manuel; Martínez‐Bueno, Manuel; Moreno, Juan; Soler, Juan José
Source:
Journal of avian biology 2020 v.51 no.4
ISSN:
0908-8857
Subject:
feathers,   etc   ; bacteria; evolution; fledglings; interspecific variation; life history; melanization; microbial load; nests;     Show all 9 Subjects
Abstract:
... Feathers are essential for avian life, and factors affecting their integrity are important to understand their evolution. These factors should depend on, among other traits, species‐specific bacterial environments and life‐history characteristics. However, interspecific variation in feather deterioration, feather susceptibility to degradation by keratinolytic bacteria (degradability), and bacteria ...
DOI:
10.1111/jav.02320

13. Stable hydrogen isotope measurements of songbird feathers: effects of intra-feather variability and sample processing

Author:
Gordo, Oscar
Source:
Journal of ornithology 2020 v.161 no.2 pp. 381-388
ISSN:
2193-7192
Subject:
feathers,   etc   ; Passeriformes; deuterium; grinding; isotope labeling; keratin; molting; provenance; songbirds; stable isotopes;     Show all 10 Subjects
Abstract:
... Deuterium composition of feathers has been widely applied to establish provenance of birds. Surprisingly, little attention has been paid to the potential sources of unwanted hydrogen isotopic variability that may affect the comparability and replicability of deuterium measurements. Feathers may exhibit hydrogen isotopic differences between distal and proximal sections, as well as between rachis an ...
DOI:
10.1007/s10336-019-01729-9

14. Bald eagles and the Thunderbird myth: Birds in pre-contact ceremonialism on Martha's Vineyard, USA

Author:
Watson, Jessica E.
Source:
Quaternary international 2020 v.543 pp. 61-70
ISSN:
1040-6182
Subject:
feathers,   etc   ; Haliaeetus leucocephalus; archaeology; bones; ceramics; copper; eagles; fauna; humans; lightning; wings; Massachusetts;     Show all 12 Subjects
Abstract:
... Ceremonialism is an integral part of human life but difficult to recover from archaeological remains. Among Native groups in Eastern North America, skins and feathers of birds were commonly used as part of ritual feast ceremonies, including those of the Thunderbird, a mythological creature associated with thunder, lightning, and the upper world. Physical evidence for the Thunderbird has been limit ...
DOI:
10.1016/j.quaint.2020.03.017

15. Birds and Epipalaeolithic hunter-gatherers in northeast Iberia. The case of the Balma del Gai site

Author:
Lloveras, Lluís; Salazar, Rubén; García-Argüelles, Pilar; Nadal, Jordi
Source:
Quaternary international 2020 v.543 pp. 25-33
ISSN:
1040-6182
Subject:
feathers,   etc   ; archaeology; birds of prey; claws; fauna; rabbits; snails; Iberian Peninsula;     Show all 8 Subjects
Abstract:
... Balma del Gai (Moià, Barcelona) is an Epipalaeolithic archaeological site that provides one of the most significant archaeological records of hunter-gatherers living in the northeast of Iberia during the Pleistocene-Holocene transition. Its faunal record evidences a very diverse spectrum of hunted species and particularly an increase in the number of certain small prey that were exploited, such as ...
DOI:
10.1016/j.quaint.2020.03.010

16. Controlled assembly of secondary keratin structures for continuous and scalable production of tough fibers from chicken feathers

Author:
Mu, Bingnan; Hassan, Faqrul; Yang, Yiqi
Source:
Green chemistry 2020 v.22 no.5 pp. 1726-1734
ISSN:
1463-9270
Subject:
feathers,   etc   ; chickens; disulfides; green chemistry; keratin; laundry; oxidation; protein structure; wastes; wet strength;     Show all 10 Subjects
Abstract:
... Tough keratin fibers from chicken feathers have been produced continuously via controlled assembly of secondary protein structures. Though research on utilization of keratinous wastes began decades ago, very few regenerated products with high quality were developed due to damage to the primary structures during extraction and poor recovery of the secondary structures in the regenerated materials. ...
DOI:
10.1039/c9gc03896e

17. Corticosterone mediates telomere length in raptor chicks exposed to chemical mixture

Author:
Powolny, T.; Bassin, N.; Crini, N.; Fourel, I.; Morin, C.; Pottinger, T.G.; Massemin, S.; Zahn, S.; Coeurdassier, M.
Source:
The Science of the total environment 2020 v.706 pp. 135083
ISSN:
0048-9697
Subject:
feathers,   etc   ; Milvus milvus; blood; chicks; corticosterone; lead; mercury; nestlings; rodenticides; synergism; telomeres; toxicity; wildlife;     Show all 13 Subjects
Abstract:
... Stressors experience early in life by animals may have carry over impacts on life-traits over the life cycle. Accelerated telomere attrition induced by stress during development and growth could play a role in such delayed effects. Among stressors, exposure to chemicals may modify telomere dynamic but, to date, the trends evidenced between exposure and telomere shortening remains inconsistent. Mor ...
DOI:
10.1016/j.scitotenv.2019.135083

18. Four new feather mites of the genus Mesalgoides Gaud & Atyeo (Acariformes: Psoroptoididae) from passerines (Aves: Passeriformes) of China

Author:
Wang, Zi-Ying; Li, Xiao-Ling; Mu, Ning; ,, Huiqun-Chang; Liu, Huai
Source:
Systematic and applied acarology 2020 v.25 no.2 pp. 236-254
ISSN:
1362-1971
Subject:
feather mites,   etc   ; Acariformes; Carpodacus; Leiothrichidae; Paridae; Pyrrhula; birds; new species; China;     Show all 9 Subjects
Abstract:
... Four new species of the feather mite genus Mesalgoides (Acariformes: Psoroptoididae: Pandalurinae) are described from passerine birds (Passeriformes) in China: Mesalgoides morrisoniasp. nov. from Alcippe morrisonia Swinhoe (Leiothrichidae), M. vinaceasp. nov. from Carpodacus vinaceus Verreaux (Fringillidae), M. flammicepissp. nov. from Cephalopyrus flammiceps (Burton) (Paridae), and M. erythacasp. ...
DOI:
10.11158/saa.25.2.6

19. The Distribution of Quill Mites (Betasyringophiloidus seiuri) among Flight Feathers of the Ovenbird (Seiurus aurocapilla)

Author:
Grossi, Alexandra A.; Proctor, Heather C.
Source:
TheJournal of parasitology 2020 v.106 no.1 pp. 82-89
ISSN:
0022-3395
Subject:
feathers,   etc   ; Acariformes; Prostigmata; Seiurus aurocapilla; adults; birds; ectoparasites; females; mites; reproductive success; tail; Canada;     Show all 12 Subjects
Abstract:
... Quill mites of the family Syringophilidae (Acariformes: Prostigmata) are permanent ectoparasites that live inside the hollow quills of feathers and use their long chelicerae to pierce the quill wall to feed on living tissue of the quill follicle. Ovenbirds (Parulidae: Seiurus aurocapilla (Linnaeus)) are host to the quill mite Betasyringophiloidus seiuri (Clark), which has been previously reported ...
DOI:
10.1645/18-160

20. Sexing a Monomorphic Plumage Seabird Using Morphometrics and Assortative Mating

Author:
Seyer, Yannick; Gauthier, Gilles; Bernatchez, Louis; Therrien, Jean-François
Source:
Waterbirds 2020 v.42 no.4 pp. 380-392
ISSN:
1524-4695
Subject:
feathers,   etc   ; DNA; assortative mating; body measurements; breasts; breeding; females; morphometry; seabirds; sex determination analysis; summer; Nunavut;     Show all 12 Subjects
Abstract:
... This study aimed to establish a reliable method based on morphometrics to sex Long-tailed Jaeger (Stercorarius longicaudus), a species with slight differences in body size between sexes but no plumage differences. The presence of assortative mating based on size was also examined to determine if within-pair differences in size could improve sexing. Seventy-six Long-tailed Jaegers were measured, in ...
DOI:
10.1675/063.042.0403