Changing Rainfall Drives Locally Asynchronous Reproduction of Tropical Birds via Modular Trophic Pathways. [PDF]
Glob Chang BiolIn low‐latitude mountains, we found insectivorous bird communities switched from breeding before to after the dry season at a threshold in dry‐season insects. Localized breeding season reversal of insectivores across wet‐to‐dry gradients magnified short‐term effects of drought and contrasted with the seasonal stability of nectar‐fruit consumers.
Newell FL, Ausprey IJ, Robinson SK.
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Does Participatory Bird Monitoring Provide Accurate Data for Ecological Research? An Experience in Rural Southwestern Mexico. [PDF]
Ecol EvolTrained local people are capable to conduct bird monitoring and generates useful data for testing ecological hypotheses related to anthropogenic impact. Scientific endeavors based on community projects should develop training strategies aimed at enhancing monitors' skills in both bird identification and abundance recording.
Mendoza-Lozana A +4 more
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Sapsucker Wells as a Keystone Nutritional Resource: Evaluating Methods for Detection of Secondary Sap Consumers. [PDF]
Ecol EvolWe used direct observations, camera traps, and environmental DNA (eDNA) to identify secondary consumers of sap from wells created by red‐naped (S. nuchalis) and Williamson's (S. thyroideus) sapsuckers among three groups of shrubs and trees in south‐central Colorado, USA.
Clawges R +5 more
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Male-Like Plumage in an Urban Nesting Veraguan Mango: Evidence of a Female-Limited Polymorphism? [PDF]
Ecol EvolWe document the first known case of a male‐plumaged Veraguan mango (Anthracothorax veraguensis) providing parental care, supported by photographs and video from southern Costa Rica. The bird incubated eggs and fed nestlings in a nest located within a heterogeneous urban–agricultural landscape.
Levey DR, Daily GC.
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The Organization of Central Retinal Projections in Anna's Hummingbirds (Calypte anna) and Zebra Finches (Taeniopygia castanotis). [PDF]
J Comp NeurolRetinal projections in the Anna's hummingbirds (Calypte anna) where studied using intraocular injections of a neural tracer and compared to those of a non‐hovering species, the Zebra finch (Taeniopygia castanotis). Retinal targets in both birds were similar and correspond closely to those reported in other birds from a variety of avian clades ...
Gutiérrez-Ibáñez C +4 more
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Bract size affects resource availability and fruit set in a hummingbird-pollinated plant with distyly polymorphism. [PDF]
Plant Biol (Stuttg)In Psychotria poeppigiana, larger bracts honestly signal greater nectar availability but have higher mortality, while smaller bracts produce more fruit, revealing a surprising trade‐off and hints of sexual role specialization in this distylous species. Abstract Plants can use non‐floral signals to advertise the presence of resources to pollinators. The
Trevizan R +4 more
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Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day- and night-flowering Nicotiana species. [PDF]
Plant Biol (Stuttg)Drought stress leads to reduced nectar secretion and alters nectar composition of day‐ and night‐flowering Nicotiana species, which may impair plant–pollinator interactions. Abstract The frequencies of droughts worldwide will increase in the future due to climate changes. Nectar composition of plant species varies in relation to pollinator and can also
Göttlinger T +3 more
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Fit for purpose? Analysis of the relationship between skull, beak shape and feeding ecology in Psittaciformes. [PDF]
J AnatPsittaciformes exhibit high levels of morphological diversity, particularly in skull and beak structure, previously linked to diet and body size. Although there were some levels of significance between diet and beak shape, body mass was a much stronger co‐variate. Diet is not determining beak shape within the clade.
Harrison SL, Sutton GP, Deeming DC.
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Frontiers in Veterinary Science, 2022 Avian pox is a common avian virus that in its cutaneous form can cause characteristic lesions on a bird's dermal surfaces. Detection of avian pox in free-ranging birds historically relied on observations of visual lesions and/or histopathology, both ...
Aoife N. Galvin +10 more
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First record of Philornis glaucinis Dodge & Aitken, 1968 (Diptera: Muscidae) in Thalurania glaucopis Gmelin, 1788 (Aves: Trochilidae) [PDF]
Biotemas, 2010 From the groups causing myiasis, the genus Philornis Meinert, 1890 appears as the only representative of the family Muscidae, obligatorily associated with birds. Thus, the aim of this work was to report the occurrence of Philornis in Thalurania glaucopis
Hermes Ribeiro Luz +4 more
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