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  1. 41
    “…In the present study, 311 parrots, belonging to four species, namely, Budgerigars (Melopsittacus undulatus), Lovebirds (Agapornis sp.), Alexandrine parakeets (Psittacula eupatria), and Cockatiel (Nymphicus hollandicus), from Beijing and Weifang cities, were examined for Cryptosporidium spp. infection. …”
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    Prevalence and Genotyping of Cryptosporidium Infection in Pet Parrots in North China
  2. 42
    “…Despite the fact that parrots (Psitacifformes) are generalist apex frugivores, they have largely been considered plant antagonists and thus neglected as seed dispersers of their food plants. …”
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    Internal seed dispersal by parrots: an overview of a neglected mutualism
  3. 43
    “…Many parrot species are kept in captivity for conservation, but often show poor reproduction, health and survival. …”
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    Oxidative stress, activity behaviour and body mass in captive parrots
  4. 44
    “…Physical cognition has generally been assessed in tool-using species that possess a relatively large brain size, such as corvids and apes. Parrots, like corvids and apes, also have large relative brain sizes, yet although parrots rarely use tools in the wild, growing evidence suggests comparable performances on physical cognition tasks. …”
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    Transfer of physical understanding in a non-tool-using parrot
  5. 45
    por Chen, Stella X., Cohen, Philip R.
    Publicado 2017
    “…The term “parrot beak nail” describes a morphologic change of the nail plate characterized by excessive forward curvature. …”
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    Parrot Beak Nails Revisited: Case Series and Comprehensive Review
  6. 46
    “…Parrot bornavirus (PaBV), the etiologic agent of proventricular dilatation disease (PDD), is a major cause of concern in the avian health community. …”
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    Apparent resolution of parrot bornavirus infection in cockatiels (Nymphicus hollandicus)
  7. 47
    “…All affected parrots are endemic to Australasia and South America. …”
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    Haemoproteus minutus is highly virulent for Australasian and South American parrots
  8. 48
    por Dotson, Marc P, Mullen, Jeff
    Publicado 2019
    “…We believe this is the first reported case of compartment syndrome of the hand from a parrot bite.…”
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    Acute Compartment Syndrome of the Hand from a Parrot Bite
  9. 49
    “…We present a complete dataset from the literature on functional traits including morphological measurements, dietary information, foraging strategy, and foraging location for all 398 extant species of parrots. The morphological measurements include: mass, total length, wing chord, culmen length, tarsus length, and tail length. …”
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    Phylogenetic supertree and functional trait database for all extant parrots
  10. 50
    por Honigsbaum, Mark
    Publicado 2014
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    In search of sick parrots: Karl Friedrich Meyer, disease detective
  11. 51
    “…Here, we show a widespread but unknown mutualistic interaction between parrots and plants through epizoochory. Combining our observations with photos from web-sources, we recorded nearly 2000 epizoochory events in 48 countries across five continents, involving 116 parrot species and nearly 100 plant species from 35 families, including both native and non-native species. …”
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    Epizoochory in Parrots as an Overlooked Yet Widespread Plant–Animal Mutualism
  12. 52
    “…Here, we investigate levels of inbreeding in a critically endangered flightless parrot, the kākāpō (Strigops habroptilus), wherein a highly inbred island population and one individual from the mainland of New Zealand founded the entire extant population. …”
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    Genomic signatures of inbreeding in a critically endangered parrot, the kākāpō
  13. 53
    por Hennig, Anja, Mohr, L., Fehr, M., Legler, M.
    Publicado 2021
    “…In captivity, cardiovascular diseases are common in grey parrots. The diagnosis of these diseases in living birds is difficult, and new diagnostic possibilities would be desirable. …”
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    The B-type natriuretic peptide of the Congo and Timneh grey parrot
  14. 54
    “…The karyotype of most birds has remained considerably stable during more than 100 million years’ evolution, except for some groups, such as parrots. The evolutionary processes and underlying genetic mechanism of chromosomal rearrangements in parrots, however, are poorly understood. …”
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    Recurrent chromosome reshuffling and the evolution of neo-sex chromosomes in parrots
  15. 55
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    Parrot beak nails: a Latin American case series()
  16. 56
    “…To place our findings in an evolutionary context, we compared our results with another parrot species that exhibits well-established and distinctive regional vocal dialects that are consistent with signaling group identity. …”
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    Individual identity information persists in learned calls of introduced parrot populations
  17. 57
    “…To this end, PARROT variants model the minimization of enzyme reallocation using four different (combinations of) distance functions. …”
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    PARROT: Prediction of enzyme abundances using protein-constrained metabolic models
  18. 58
    “…Among these, we obtained statistically significant evidence that parrots are the closest and falcons the second-closest relatives of passerines, together constituting the Psittacopasserae and the Eufalconimorphae, respectively. …”
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    Mesozoic retroposons reveal parrots as the closest living relatives of passerine birds
  19. 59
    “…Parrots and songbirds learn their vocalizations from a conspecific tutor, much like human infants acquire spoken language. …”
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    Localized Brain Activation Related to the Strength of Auditory Learning in a Parrot
  20. 60
    “…Here, we report the first successful and instantaneous solution of the shaking task through logical inference by a non-ape species, the African grey parrot. Surprisingly, the performance of the birds was sensitive to the shaking movement: they were successful with containers shaken horizontally, but not with vertical shaking resembling parrot head-bobbing. …”
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    Grey parrots use inferential reasoning based on acoustic cues alone
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