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35 results for “Tachycineta”
Figura 10 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 10. Ubicación geográfica de registros reproductivos con evidencia concreta de Tachycineta leucopyga en el noroeste de la Patagonia: (Íconos amarillos = este trabajo) El de Fig. 6 resulta ser el más septentrional para Argentina al cotejarlo con los publicados (íconos negros).
Figura 3 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 3. Persecución y expulsión agresiva por parte de Progne tapera fusca a individuos de Himantopus mexicanus. Dpto. Picún Leufú, provincia del Neuquén, 17 de enero de 2016. Fotografía: M. Bianchini. (Lugar 9 de Tabla 1, Fig. 9).
Figura 9 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 9. Ubicación geográfica de registros reproductivos de Progne tapera fusca en la Patagonia: (Íconos amarillos numerados = este trabajo) Amplían su rango geográfico reproductivo austral hacia el oeste, y al sur del noreste de Chubut, siendo las primeras evidencias publicadas para Neuquén y Río Negro; (Íconos verdes numerados = este trabajo) Registros de Territorialidad; (Íconos negros) Citas/evidencias publicadas donde (S/D) = Sin Datos; (S/E) = Sin Evidencia; (C/E) = Con Evidencia). Información de c/ lugar, ver Tabla 1.
Figura 6 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 6. Evidencia reproductiva más septentrional de Tachycineta leucopyga para Argentina, provincia del Neuquén, ANP Lagunas de Epulauquen, dpto. Minas (Fig. 10): A a C) Adulto parental, extrayendo saco fecal del nido (ubicado en hueco de Roble pellín), y alimentando a una de sus crías; D) Cuatro polluelos asomados a la boca del nido con no mas de tres semanas de vida. 02 de febrero de 2023; E) Árbol hospedante y ambiente (bosque de roble pellín); F) Adulto parental en estado de vigilia del nido. Fotografías: M. Bianchini.
Figura 5 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 5. Detalles de aspectos fisonómicos de polluelos volantones de Progne tapera fusca: A) Coloración del pico y del párpado; B) Dimensiones relativas de longitud de plumas de alas y de timoneras; C) Coloración general del plumaje. 11 de enero de 2018. Fotografías: M. Bianchini.
Figure 11 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figure 11. Geographic location of reproductive records of Hirundo rustica erythrogaster in northern Patagonia: (Yellow icons = this work) Extreme maximum values of its altitudinal range for South America (Places 1 and 2), and complement of its reproductive geographic advance (Places 3 and 4) with respect to the published evidence of both higher altitudes in South America and more north-western in Neuquén (black icons = in Bianchini (2023)).
Figura 8 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 8. Evidencias reproductivas más nor-occidentales de Hirundo rustica erythrogaster para la provincia del Neuquén, Argentina, sobre RN40, dpto. Loncopué: A) Único nido con tres polluelos recién nacidos, 30 de enero de 2023; B) Mismo nido con signos de crianza, aprecie las heces en el suelo de camadas anteriores; C) Mismos polluelos con una semana de vida, 05 de febrero de 2023; D) Alcantarilla y entorno (Lugar 3 de Tabla 2 y de Fig. 11); E) Nido vacío; F) Con signos de crianza de anterior camada, 05 de febrero de 2023. (Lugar 4 de Tabla 2 y de Fig. 11). Fotos. Mauro Bianchini.
Figure 7 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figure 7. Extreme reproductive evidence of its altitudinal range for South America of Hirundo rustica erythrogaster, Río Negro province, Patagonia, Argentina: A and B) Nest and environment. Bajo del Gualicho, dept. Gral. Conesa, november 22, 2021 (Place 1 of Table 2 and Fig. 11). Photo. G. Amico; C and D) Incubating individual and environment. Somuncurá plateau, dept. Valcheta, march 2, 2023 (Place 2 of Table 2 and Fig. 11). Photos: L. Sympson and G. Amico respectively.
Figura 2 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 2. Primeras evidencias de reproducción de Progne tapera fusca para la provincia del Neuquén. Dpto. Confluencia (Lugares 3, 4 y 5 de Tabla 1, Fig. 9): Polluelos y juveniles de tres de los seis nidos de Furnarius rufus relevados en la Ciudad capital provincial. A) Polluelo de dos semanas de vida, 07 de marzo de 2016; B) Polluelos de tres semanas de vida, 10 de enero de 2018; C) Juveniles de más de cuatro semanas, 11 de enero de 2017; D) Polluelo asomado a la boca del nido de Furnarius rufus; E) Adulto alimentándolo. Alrededores de la presa El Chocón, 04 de marzo de 2016; F) Tres juveniles y uno de los adultos parentales (derecha). Zona urbana de Plaza Huincul, 19 de febrero de 2019; G) Vista del lugar 3. Fotografías: M. Bianchini.
Figura 4 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 4. Evidencias de cuidado parental de Progne tapera fusca durante su período reproductivo en el noroeste de la Patagonia, Argentina (Lugar 3 de Tabla 1 y Fig. 9): A) Extracción de sacos fecales, 05 de marzo de 2016; B y C) Alimentación, abeja europea (Apis mellifera) 05 de marzo de 2016, y anisóptero (libélula) 24 de diciembre de 2016; D y E) En pleno suministro alimenticio, 07 de enero de 2018 y 13 de enero de 2017; F) Estado de vigilia del nido. 13 de marzo de 2016. Fotografías: M. Bianchini.
Figura 1 in geográfica fusca Actualización y ampliación de la distribución reproductiva de tres especies de golondrinas en la Patagonia (Progne tapera , Tachycineta leucopyga y Hirundo rustica erythrogaster, Passeriformes: Hirundinidae) y aspectos observados durante el período de cría
Figura 1. Primeras evidencias publicadas de reproducción de Progne tapera fusca para la provincia de Río Negro, 26 de diciembre de 2015: A) Adulto alimentando a un polluelo en nido de Furnarius rufus; B) Cuidado parental, alimentando y vigilando el área. Chimpay. Dpto. Avellaneda; C) Grupo familiar, posado en tendido eléctrico, próximo a su nido (izq.); D) Uno de los juveniles. RN 250, dpto. Conesa. Fotografías: M. Bianchini. (Lugares 1 y 2 de Tabla 1, Fig. 9).
Radar revelations: Insect availability influences parental provisioning in breeding Tree Swallows (Tachycineta bicolor)
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Data from: Achromatic plumage brightness predicts stress resilience and social interactions in tree swallows (Tachycineta bicolor)
Theory suggests that signal honesty may be maintained by differential costs for high and low quality individuals. For signals that mediate social interactions, costs can arise from the way that a signal changes the subsequent social environment via receiver responses. These receiver-dependent costs may be linked with individual quality through variation in resilience to environmental and social stress. Here, we imposed stressful conditions on female tree swallows (Tachycineta bicolor) by attaching groups of feathers during incubation to decrease flight efficiency and maneuverability. We simultaneously monitored social interactions using an RFID network that allowed us to track the identity of every individual that visited each nest for the entire season. Prior to treatments, plumage coloration was correlated with baseline and stress-induced corticosterone. Relative to controls, experimentally challenged females were more likely to abandon their nest during incubation. Overall, females with brighter white breasts were less likely to abandon, but this pattern was only significant under stressful conditions. In addition to being more resilient, brighter females received more unique visitors at their nest box and tended to make more visits to other active nests. In contrast, dorsal coloration did not reliably predict abandonment or social interactions. Taken together, our results suggest that females differ in their resilience to stress and that these differences are signaled by plumage brightness, which is in turn correlated with the frequency of social interactions. While we do not document direct costs of social interaction, our results are consistent with models of signal honesty based on receiver-dependent costs.
Identity and characteristics of feathers used as lining in Tree Swallow (Tachycineta bicolor) nests in Indiana and Ohio
<p><span>Nest building represents an important part of parental investment and can significantly impact reproductive success in many bird species. Tree Swallows (<em>Tachycineta bicolor</em>) are secondary cavity nesters that readily accept nest boxes and construct basic grass nest cups lined with molted feathers from other bird species. We identified and described the characteristics of the feathers used as nesting materials by Tree Swallows in 4 different habitats in Indiana and Ohio. We monitored 41 nest boxes in 2017 and 53 nest boxes in 2018. After chicks fledged, we collected feathers from nests, counted them, and characterized them by size, color, and type. Brown, medium length (5–10 cm), and contour feathers were significantly more common than other types of feathers. We compared the prevalence and characteristics of feathers in nests across different habitat types, with results showing that nests located near lakes had significantly more feathers than those in agricultural habitats. We identified which species feathers belonged to using molecular techniques and morphological comparisons and found that they belonged to 26 species from 19 families and 11 orders: Galliformes, Anseriformes, Columbiformes, Gruiformes, Charadriiformes, Pelecaniformes, Accipitriformes, Strigiformes, Piciformes, Cathartiformes, and Passeriformes, including 20 previously unreported species within those orders. Thus, feathers used as nest lining by Tree Swallows are more diverse than previously reported. Feather identities from each habitat matched avian communities in those areas, suggesting that Tree Swallows are generalist feather collectors and that the number and characteristics of feathers used as lining depends on feather availability near the nesting site. </span></p>
Reproductive output and telomere dynamics following calcium supplementation in wild Tree Swallows (Tachycineta bicolor)
<p>This data was the result of an experiment investigating whether biologically relevant differences in reproductive investment influence fitness in a wild bird species. We employed calcium supplementation to experimentally modify reproductive output in Tree Swallow mothers and offspring and we used telomere dynamics during the breeding season as a proxy for fitness. <span>To confirm that calcium supplementation positively impacts reproductive parameters at our study site, we initiated a 4-year trial of calcium supplementation with our Tree Swallow study population. In the following two breeding seasons, we used calcium supplementation to experimentally alter reproductive output and measured telomere length in mothers immediately before egg-laying and shortly before fledging to determine the direct relationship between reproductive investment and telomere shortening in this species. </span>Our study includes one hundred eighty-eight nests initiated and monitored over six breeding seasons. </p>
Reproductive output and telomere dynamics following calcium supplementation in wild Tree Swallows (Tachycineta bicolor)
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Data from: Achromatic plumage brightness predicts stress resilience and social interactions in tree swallows (Tachycineta bicolor)
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Identity and characteristics of feathers used as lining in Tree Swallow (Tachycineta bicolor) nests in Indiana and Ohio
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Data from: The environmental and genetic determinants of chick telomere length in Tree Swallows ( Tachycineta bicolor )
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Data from: Individual variation and selection for phenotypic plasticity of laying date and clutch size across different environmental conditions in Tree swallow (Tachycineta bicolor)
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