Diet of moulting Swainson's Thrushes (Catharus ustulatus) and Tennessee Warblers (Leiothlypis peregrina) at a stopover site during fall migration measured with fecal DNA metabarcoding

Blanc-Benigeri, Ana; Poirier, Vanessa; Narango, Desiree; Elliott, Kyle H.; Frei, Barbara

doi:https://open-science.canada.ca/handle/123456789/2979

Diet of moulting Swainson's Thrushes (Catharus ustulatus) and Tennessee Warblers (Leiothlypis peregrina) at a stopover site during fall migration measured with fecal DNA metabarcoding Régime alimentaire des grives à dos olive (Catharus ustulatus) et des parulines obscures (Leiothlypis peregrina) en halte migratoire pendant la migration d’automne, mesuré par métacodage à barres de l’ADN fécal

Simple item page

Full item details

dc.contributor.author: Blanc-Benigeri, Ana; Poirier, Vanessa; Narango, Desiree; Elliott, Kyle H.; Frei, Barbara
dc.date.accepted: 2024-04-10
dc.date.accessioned: 2024-09-19T19:13:44Z
dc.date.available: 2024-09-19T19:13:44Z
dc.date.issued: 2024-04-30
dc.date.submitted: 2023-11-27
dc.description - en: Moult and migration are energetically demanding and require adequate nutrition. Here, we use DNA barcoding of fecal samples to compare the diet of moulting and actively migrating (post-moult) Swainson’s thrushes (Catharus ustulatus) and Tennessee warblers (Leiothlypis peregrina) during their fall migration stopover at a large urban greenspace in Montreal, Canada. Diet differed according to moult status, species, and seasonality. Swainson’s thrushes had a broad diet with frequent detections of both insects and berry-producing shrubs, while detections in Tennessee warblers’ diets were mainly arthropods. For both species, more actively migrating individuals consumed fleshy-fruiting plants than moulting individuals. A higher proportion of moulting birds consumed arthropods compared to active migrants, due to either arthropod availability or a dietary preference for proteinaceous foods to grow feathers. Both species and moult classes consumed more native plants than non-native plants later in the season. We show the importance of managing urban greenspaces with native plants and diverse food sources that can provide for the different dietary needs of migratory birds.
dc.description.abstract - en: Moult and migration are energetically demanding and require adequate nutrition. In some species, individuals may interrupt their fall migration to moult at discrete stopover locations outside of their breeding grounds (i.e., moult-migration) leading to competing nutritional demands for moult and migration. Here, we use DNA barcoding of fecal samples to compare the diet of moulting and actively migrating (post-moult) Swainson’s Thrushes (Catharus ustulatus) and Tennessee Warblers (Leiothlypis peregrina) during their fall migration stopover at a large urban greenspace in Montreal, Canada. Diet differed according to moult status, species, and seasonality. Swainson’s Thrushes had a broad diet with frequent detections of both insects and berry-producing shrubs; while detections in Tennessee Warblers’ diets were mainly arthropods. For both species, more actively migrating individuals consumed fleshy-fruiting plants than moulting individuals. A higher proportion of moulting birds consumed arthropods compared to active migrants, due to either arthropod availability or a dietary preference for proteinaceous foods to grow feathers. Both species and moult classes consumed more native plants than non-native plants later in the season. We show the importance of managing urban greenspaces with native plants and diverse food sources that can provide for the different dietary needs of migratory birds.
dc.description.fosrctranslation - fr: La mue et la migration demandent beaucoup d’énergie et nécessitent une alimentation adéquate. Ici, nous utilisons le codage à barres de l’ADN d’échantillons fécaux pour comparer le régime alimentaire des grives à dos olive (Catharus ustulatus) et des parulines obscures (Leiothlypis peregrina) en mue et en migration active (après la mue) pendant leur halte migratoire d’automne dans un grand espace vert urbain à Montréal, au Canada. Le régime alimentaire diffère en fonction de l’état de la mue, de l’espèce et de la saisonnalité. Les grives à dos olive ont un régime alimentaire varié, et on détecte fréquemment des insectes et des baies provenant d’arbustes à petits fruits; tandis que les aliments détectés dans le régime alimentaire des parulines obscures étaient principalement des arthropodes. Pour les deux espèces, les individus en migration active étaient plus nombreux à consommer des plantes à fruits charnus que les individus en mue. Une proportion plus élevée d’oiseaux en mue a consommé des arthropodes par rapport aux migrants actifs, soit en raison de la disponibilité des arthropodes, soit en raison d’une préférence alimentaire pour les aliments protéiques destinés à la croissance des plumes. Les deux espèces et les classes de mue ont consommé plus de plantes indigènes que de plantes non indigènes plus tard dans la saison. Nous montrons l’importance de gérer les espaces verts urbains avec des plantes indigènes et des sources de nourriture diverses qui peuvent répondre aux différents besoins alimentaires des oiseaux migrateurs.
dc.identifier.doi: https://doi.org/10.1038/s41598-024-59462-0
dc.identifier.issn: 2045-2322
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/2979
dc.language.iso: en
dc.publisher: Springer Nature
dc.rights - en: Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.rights - fr: Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.rights.openaccesslevel - en: Gold
dc.rights.openaccesslevel - fr: Or
dc.rights.uri - en: https://creativecommons.org/licenses/by/4.0/
dc.rights.uri - fr: https://creativecommons.org/licenses/by/4.0/deed.fr
dc.subject - en: Nature and environment; Science and technology
dc.subject - fr: Nature et environnement; Sciences et technologie
dc.subject.en - en: Nature and environment; Science and technology
dc.subject.fr - fr: Nature et environnement; Sciences et technologie
dc.title - en: Diet of moulting Swainson's Thrushes (Catharus ustulatus) and Tennessee Warblers (Leiothlypis peregrina) at a stopover site during fall migration measured with fecal DNA metabarcoding; Régime alimentaire des grives à dos olive (Catharus ustulatus) et des parulines obscures (Leiothlypis peregrina) en halte migratoire pendant la migration d’automne, mesuré par métacodage à barres de l’ADN fécal
dc.type - en: Article
dc.type - fr: Article
local.acceptedmanuscript.articlenum: 9913
local.article.journaltitle: Scientific Reports
local.article.journalvolume: 14
local.pagination: 12 pages
local.peerreview - en: Yes
local.peerreview - fr: Oui
local.requestdoi: No

Download(s)

Original bundle

Now showing 1 - 1 of 1

Name: DietMoultingSwainsonsThrushesCatharusUstulatusTennesseeWarblersLeiothlypisPeregrinaStopoverSiteFallMigrationMeasuredFecalDNAMetabarcoding.pdf

Size: 1.34 MB

Format: PDF

Download file

Collection(s)

Biodiversity