Red-breasted Nuthatch, <em>Sitta canadensis</em>, Dies Stuck in Resin at Entrance to a Nest-box
نویسندگان
چکیده
منابع مشابه
Competition for Red-cockaded Woodpecker Roost and Nest Cavities: Effects of Resin Age and Entrance Diameter
Ansra.Cr.-competition for roost and nest cavities was investigated in a Texas population of Red-cockaded Woodpeckers (Picoides borealis) in longleaf pine (Pinus pahstris) habitat. Twenty-two percent of all examined cavities were occupied by Red-cockaded Woodpeckers, and 46% were occupied by other species. Red-cockaded Woodpeckers did not roost in the open or in sub-optimum cavities due to the p...
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Life-history theory predicts that differences in reproductive effort and residual reproductive value among species should result in differences in the level of risk that parents are willing to tolerate to themselves versus their offspring. Specifically, highly fecund and shorter-lived species are expected to place greater value in current offspring than themselves, whereas less fecund and longe...
متن کاملRed-cockaded Woodpecker Nest-cavity Selection: Relationships with Cavity Age and Resin Production
-We evaluated selection of nest sites by male Red-cockaded Woodpeckers (Picoides borealis) in Texas relative to the age of the cavity when only cavities excavated by the woodpeckers were available and when both naturally excavated cavities and artificial cavities were available. We also evaluated nest-cavity selection relative to the ability of naturally excavated cavity trees to produce resin,...
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Received Jun 3, 2016 Revised Jun 12, 2017 Accepted Sep 11, 2017 The paper proposes a design strategy to retain the true nature of the output in the event of occurrence of stuck at faults at the interconnect levels of digital circuits. The procedure endeavours to design a combinational architecture which includes attributes to identify stuck at faults present in the intermediate lines and involv...
متن کاملPerching of Tengmalm's Owl (Aegolius funereus) Nestlings at the Nest Box Entrance: Effect of Time of the Day, Age, Wing Length and Body Weight
The behaviour of the nestlings of nocturnal cavity-nesting species has relatively rarely been studied in detail because of problems connected with use of the technical devices required to provide long-term monitoring of individuals. However, long-term observation of nestling behaviour is crucial in order to identify different types of behaviour which may be caused by sibling competition at the ...
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ژورنال
عنوان ژورنال: The Canadian Field-Naturalist
سال: 2007
ISSN: 0008-3550
DOI: 10.22621/cfn.v121i4.519