Sixty-second Supplement to the American Ornithological Society’s<i>Check-list of North American Birds</i>

Chesser, R. Terry; Billerman, Shawn M.; Burns, Kevin J.; Cicero, Carla; Dunn, Jon L.; Hernández‐Baños, Blanca E.; Kratter, Andrew W.; Lovette, Irby J.; Mason, Nicholas A.; Rasmussen, Pamela C.; Remsen, J. V.; Stotz, Douglas F.; Winker, Kevin

doi:10.1093/ornithology/ukab037

Cited by 32 publications

(27 citation statements)

References 68 publications

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“…This is noteworthy because Marsh Wrens, Sedge Wrens, and Grass Wrens form a common clade, where, until recently, Sedge Wrens and Grass Wrens were considered conspecifics, both included in C. platensis, and distinct from Marsh Wrens that were classified as C. palustris (Barker 2004). Recently, there has been a further separation of Sedge Wrens and Grass Wrens into different species as well (Chesser et al 2021), and additional species divisions have been proposed within the Central and South American complex of Grass Wrens (Robbins and Nyári 2014). The systematics of this species complex remains in flux, but differences in patterns of song sharing between Grass Wrens and Sedge Wrens lend further support to the proposed split between them.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, there has been a further separation of Sedge Wrens and Grass Wrens into different species as well (Chesser et al. 2021), and additional species divisions have been proposed within the Central and South American complex of Grass Wrens (Robbins and Nyári 2014). The systematics of this species complex remains in flux, but differences in patterns of song sharing between Grass Wrens and Sedge Wrens lend further support to the proposed split between them.…”

Section: Discussionmentioning

confidence: 99%

“…The range of Grass Wrens extends from Tierra del Fuego to Mexico, where they inhabit tropical and temperate grasslands, marshes, and bogs from sea level up to 4000 m asl (Ridgely and Tudor 1989, Chesser et al 2021, Remsen et al 2021. Grass Wrens are small (~9 g) insectivorous passerines, predominately resident, and socially monogamous (Llambias et al 2018, Zarco and Llambı ´as 2018, Fujikawa and Tubelis 2020.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Structure and organization of songs of south‐temperate Grass Wrens ( Cistothorus platensis )

Coria

Rendall

Ros

et al. 2022

J of Field Ornithology

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Studies of geographic variation in bird song can provide important insights into vocal evolution. An intraspecific approach, focused on a single species with a broad distribution, can be particularly helpful in understanding the diverse selective pressures on the characteristics of songs and singing behavior. Grass Wrens (Cistothorus platensis) are one such species, inhabiting tropical and temperate grasslands across the Neotropics. We studied Grass Wrens in Mendoza, Argentina, to determine the structure, organization, and delivery of their songs, song repertoire sizes, and patterns of song sharing among males in a resident, mainland south-temperate population. Over two breeding seasons, we recorded and analyzed 27,795 songs from 29 color-banded males. Songs of male Grass Wrens contained a few, low-volume introductory notes typically followed by one, but sometimes more, syllable types repeated as a trill. Males often repeated a sequence of two or three different song types (A-B-C, A-B-C, . . .) several times before switching to a different sequence (D-E-F). Syllable and song type sharing was high among males. The size of recorded syllable and song type repertoires of individual males varied with sampling effort. The introduction of new syllable or song types by males slowed, but did not reach asymptotes, with increasingly large samples of recordings. Many of these patterns are consistent with previous reports for Grass Wrens and other Cistothorus wrens, possibly representing core features of song design in this species group. Our results concerning song sharing among males in a resident population are also consistent with a previous proposed relationship between male song sharing and breeding-site fidelity. In the latter respect, Grass Wrens of Central and South America are more similar to Marsh Wrens than Sedge Wrens of North America, providing support for a recently proposed split between Grass Wrens and Sedge Wrens formerly considered conspecific.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Structure and organization of songs of south‐temperate Grass Wrens ( Cistothorus platensis )

Coria

Rendall

Ros

et al. 2022

J of Field Ornithology

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“…The grass wren is a socially monogamous passerine distributed from Cape Horn to Mesoamerica (Zarco and Llambías 2018, Llambías et al 2019a, Fujikawa and Tubelis 2020, Remsen et al 2021). Until recently it was considered conspecific with the largely migratory sedge wren Cistothorus stellaris of North America (Chesser et al 2021), making the grass wren an excellent model for future comparisons between tropical and temperate populations. Using data from three breeding seasons and parentage analyses of 73 broods, we estimate the population EPP rate (proportion of extra‐pair offspring in the study population) per season and then explore the influence of breeding synchrony, male breeding density and ASR on the EPP rate (proportion of extra‐pair offspring in each brood) from a local scale perspective.…”

Section: Introductionmentioning

confidence: 99%

Local male breeding density affects extra‐pair paternity in a south temperate population of grass wrensCistothorus platensis

Arrieta

Campagna

Mahler

et al. 2022

Journal of Avian Biology

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Demographic factors can affect the frequency of extra‐pair paternity (EPP) in birds, as the distribution and availability of potential mates in both space and time influence the rate of encounters between females and males. Over three breeding seasons, we intensively studied the breeding system of a south temperate population of grass wrens Cistothorus platensis by genotyping 73 broods (319 nestlings) and estimating EPP rates for those broods. Using five different radii (80, 160, 240, 320 and 400 m) around each nest with assigned paternity, we examined the effects of local breeding synchrony, male breeding density and adult sex ratio (ASR) on the EPP rate. The majority of extra‐pair offspring (~80%) were sired by neighboring males. Neither local breeding synchrony nor ASR consistently explained the EPP rate variation as their effects were only statistically significant within 320 and 400 m. However, the EPP rate increased as the local male breeding density increased within every radius category, strongly suggesting that neighboring male abundance might play an important role in the extra‐pair mating behavior in this species. Our study also highlights the relevance of using a local scale approach when studying mating behavior.

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Bird species potentially exposed to pesticide‐treated corn seeds in the continental United States

Sullivan¹,

Wisk

2022

Integr Envir Assess & Manag

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In the United States, the use of pesticide-coated seeds in agriculture is a widely adopted practice. Consumption of treated crop seeds is a possible route of exposure of birds to pesticides. A combination of agronomic and bird life history information is used to identify those species most likely to consume freshly planted corn seeds. Species listed as threatened or endangered by the US Fish and Wildlife Service that could consume treated seeds are also identified. Corn-growing counties in the continental United States were compiled for the years 2017-2020. Seven hundred and eight bird species occur in corngrowing counties. Feeding habits and habitats of North American bird species that occur in corn-growing counties indicate that 107 species could feed on the ground in or adjacent to freshly planted corn fields and consume seeds. Of these, 21 species show a high tendency to feed in or around freshly planted corn fields and could consume a large quantity of corn seeds. Of the 107 species with the potential to consume freshly planted corn, only two full species (as opposed to subspecies), the Gunnison sage-grouse and whooping crane, are listed as threatened or endangered under the US Endangered Species Act. Additionally, two subspecies, Mississippi sandhill crane and masked bobwhite, are listed as endangered. The streaked horned lark is listed as threatened. Of the 21 species, including subspecies, that have the greatest potential to consume a freshly planted treated corn seed, the Mississippi sandhill crane is the only listed species considered to have a high potential to consume treated corn seeds. Therefore, the potential exposure of federally listed threatened or endangered bird species to pesticides through the direct consumption of pesticide-treated corn seeds is low, with the possible exception of the Mississippi sandhill crane.

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Sixty-second Supplement to the American Ornithological Society’sCheck-list of North American Birds

Cited by 32 publications

References 68 publications

Structure and organization of songs of south‐temperate Grass Wrens ( Cistothorus platensis )

Structure and organization of songs of south‐temperate Grass Wrens ( Cistothorus platensis )

Local male breeding density affects extra‐pair paternity in a south temperate population of grass wrensCistothorus platensis

Bird species potentially exposed to pesticide‐treated corn seeds in the continental United States

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