Pheugopedius felix lawrencii

Silva, Héctor Gómez de, Pérez Villafaña, Mónica G., Cruz-Nieto, Javier & Cruz-Nieto, Miguel Ángel, 2020, Are some of the birds endemic to the Tres Marías Islands (Mexico) species?, Bulletin of the British Ornithologists’ Club 140 (1), pp. 7-37 : 23-25

publication ID

https://doi.org/ 10.25226/bboc.v140i1.2020.a3

DOI

https://doi.org/10.5281/zenodo.13755890

persistent identifier

https://treatment.plazi.org/id/0381A348-FFCB-CB32-36CA-A9D83DF0FEDC

treatment provided by

Felipe

scientific name

Pheugopedius felix lawrencii
status

 

HAPPY WREN Pheugopedius felix lawrencii View in CoL

(vs. P. f. pallidus total score 8)

Coloration.—White mid-breast and mid-belly vs. rufous breast and belly in pallidus ( Fig. 13 View Figure 13 ; Grant 1965a, based on 43 male and 30 female lawrencii vs. 37 male and 18 female pallidus [not scored]). Among 18 lawrencii at IBUNAM, a few are washed warm on the breast, but are still usually paler than the palest pallidus. Even if there is warm colour across part of the breast, there is much white on the mid-breast and mid-belly. Examination of the ‘warmest’ specimens of lawrencii (P016585) revealed a diagnostic character not previously mentioned in the literature (e.g. Nelson 1898, Ridgway 1904, Grant 1965a): the colour of the underwing-coverts. In lawrencii , these are white or whitish, contrasting with the warm breast-sides, whereas pallidus has cinnamon / rufous underwing-coverts concolorous with the breast (score 3) ( Fig. 14 View Figure 14 ). Ear-coverts have significantly more white than black feathers vs. black and white feathers approximately equally prominent (score 2) ( Fig. 13 View Figure 13 ). One or other of these differences between lawrencii and pallidus is of somewhat similar magnitude to those between certain subspecies of, e.g., Coraya Pheugopedius coraya , Rufous-and-white Thryophilus rufalbus , Buff-breasted Cantorchilus leucotis, Carolina Thryothorus ludovicianus and White-browed Wrens T. albinucha , but in those cases there are zones of intergradation and smooth clines, whereas between lawrencii and pallidus the differences are abrupt and occur in both characters simultaneously. Grant (1965a) noted that in both plumage features, juveniles from the mainland approach those of Tres Marías birds.

Morphometrics.—Longer wing, tail and, especially in females, bill (score 2) but tarsus relatively shorter (not significantly different in female and only slightly bigger in male [score 1]).

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Passeriformes

Family

Troglodytidae

Genus

Pheugopedius

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