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Functional constraints on the number and shape of flight feathers.
Kiat Y, O'Connor JK. Kiat Y, et al. Proc Natl Acad Sci U S A. 2024 Feb 20;121(8):e2306639121. doi: 10.1073/pnas.2306639121. Epub 2024 Feb 12. Proc Natl Acad Sci U S A. 2024. PMID: 38346196
The evolution of powered flight in modern birds involved exaptation of feathered surfaces extending off the limbs and tail yet most studies concerning flight potential in pennaraptorans do not account for the structure and morphology of the wing feathers themselves. Analysis of t …
The evolution of powered flight in modern birds involved exaptation of feathered surfaces extending off the limbs and tail yet most studies …
Subtle, pervasive genetic correlation between the sexes in the evolution of dimorphic hummingbird tail ornaments.
Clark CJ, Rankin D. Clark CJ, et al. Evolution. 2020 Mar;74(3):528-543. doi: 10.1111/evo.13881. Epub 2019 Dec 10. Evolution. 2020. PMID: 31729031
On the hummingbird phylogeny, tail length does not fit this two-step model; although hummingbirds repeatedly evolved ornamental, elongated tails, dimorphism evolves on the same phylogenetic branch as elongation, implying that gamma quickly evolves to be low over phylogenetic time …
On the hummingbird phylogeny, tail length does not fit this two-step model; although hummingbirds repeatedly evolved ornamental, elongated t …
Rectricectomy With Pygostylectomy for Resolution of Feather Trauma in an Umbrella Cockatoo (Cacatua alba).
Welle KR. Welle KR. J Avian Med Surg. 2019 Jun 1;33(2):193-197. doi: 10.1647/2015-121. J Avian Med Surg. 2019. PMID: 31251509
Diagnostic tests included hematologic testing and biochemical analysis, circovirus testing, feather biopsy, and radiographs, results of which were unremarkable. Because of the chronic pain associated with the frequent rectrix damage, a complete rectricectomy was performed. …
Diagnostic tests included hematologic testing and biochemical analysis, circovirus testing, feather biopsy, and radiographs, results of whic …
Differential effects of early growth conditions on colour-producing nanostructures revealed through small angle X-ray scattering and electron microscopy.
Janas K, Łatkiewicz A, Parnell A, Lutyk D, Barczyk J, Shawkey MD, Gustafsson L, Cichoń M, Drobniak SM. Janas K, et al. J Exp Biol. 2020 Sep 28;223(Pt 18):jeb228387. doi: 10.1242/jeb.228387. J Exp Biol. 2020. PMID: 32764026 Free article.
Nestlings from the broods enlarged at a later stage of growth showed a sex-specific rectrix development delay, with males being more sensitive to this manipulation. ...
Nestlings from the broods enlarged at a later stage of growth showed a sex-specific rectrix development delay, with males being more …
Effectiveness of Morphological Sex Determination in the East Asian Barn Swallow (Hirundo rustica gutturalis) on Spring Migration.
Nam HY, Lee SY, Cho SY, Choi CY, Park SY, Bing GC, Park CU, Seo SG, Kim YM. Nam HY, et al. Zool Stud. 2018 Oct 15;57:e43. doi: 10.6620/ZS.2018.57-43. eCollection 2018. Zool Stud. 2018. PMID: 31966283 Free PMC article.
Two of eight measured variables - streamer length (the difference in length between the 5th and 6th rectrices; T6-T5) and length of the white patch on the outermost tail (6th rectrix; T6) - were selected as the best predictors for sex determination by stepwise discriminant …
Two of eight measured variables - streamer length (the difference in length between the 5th and 6th rectrices; T6-T5) and length of the whit …
The chicken frizzle feather is due to an α-keratin (KRT75) mutation that causes a defective rachis.
Ng CS, Wu P, Foley J, Foley A, McDonald ML, Juan WT, Huang CJ, Lai YT, Lo WS, Chen CF, Leal SM, Zhang H, Widelitz RB, Patel PI, Li WH, Chuong CM. Ng CS, et al. PLoS Genet. 2012;8(7):e1002748. doi: 10.1371/journal.pgen.1002748. Epub 2012 Jul 19. PLoS Genet. 2012. PMID: 22829773 Free PMC article.
Retroviral-mediated expression of the mutated F cDNA in the wild-type rectrix qualitatively changed the bending of the rachis with some features of frizzle feathers including irregular kinks, severe bending near their distal ends, and substantially higher variations among …
Retroviral-mediated expression of the mutated F cDNA in the wild-type rectrix qualitatively changed the bending of the rachis with so …
Comparisons of host specificity in feather louse genera (Insecta: Phthiraptera: Philopteridae) parasitizing gulls (Aves: Laridae: Larus).
Yamagishi A, Yao I, Johnson KP, Yoshizawa K. Yamagishi A, et al. Zoolog Sci. 2014 Jun;31(6):383-9. doi: 10.2108/zs130263. Zoolog Sci. 2014. PMID: 24882099 Free article.
Both Quadraceps species were collected from the interbarb of the remex or rectrix, and a match in body size between the louse and the interbarb space may be important in escape from host preening defenses. ...
Both Quadraceps species were collected from the interbarb of the remex or rectrix, and a match in body size between the louse and the …
Using marine isoscapes to infer movements of oceanic migrants: The case of Bulwer's petrel, Bulweria bulwerii, in the Atlantic Ocean.
Cruz-Flores M, Militão T, Ramos R, González-Solís J. Cruz-Flores M, et al. PLoS One. 2018 Jun 12;13(6):e0198667. doi: 10.1371/journal.pone.0198667. eCollection 2018. PLoS One. 2018. PMID: 29894489 Free PMC article.
Secondly, based on this moult knowledge, we selected three feathers from tracked birds to infer their breeding and non-breeding grounds using SIA: the 1st primary (P1), the 8th secondary (S8) and the 6th rectrix (R6) feathers. Birds migrated to two main non-breeding areas, …
Secondly, based on this moult knowledge, we selected three feathers from tracked birds to infer their breeding and non-breeding grounds usin …
17 results