Boreal Owl (Aegolius funereus)

2020 ◽  
Author(s):  
G. D. Hayward ◽  
P. H. Hayward
Keyword(s):  
Aegolius Funereus ◽  
Boreal Owl

scholarly journals Two New Late Pleistocene Avifaunas From New Mexico

The Condor ◽  
2006 ◽  
Vol 108 (3) ◽  
pp. 721-730 ◽  
Author(s):  
Rebecka L. Brasso ◽  
Steven D. Emslie
Keyword(s):  
New Mexico ◽  
Great Basin ◽  
Late Pleistocene ◽  
New Records ◽  
Rocky Mountain ◽  
Subalpine Forest ◽  
Radiocarbon Dates ◽  
Aegolius Funereus ◽  
Boreal Owl ◽  
Gymnogyps Californianus

Abstract We report two new late Pleistocene avifaunas from New Mexico, recovered from Sandia Cave during archaeological excavations by F. Hibben in the 1930s and the nearby Marmot Cave excavated in 2000. The fossil assemblage from Sandia Cave consists of at least 30 taxa, including seven extralimital and two extinct species, Coragyps occidentalis (extinct vulture) and Ectopistes migratorius (Passenger Pigeon). The avifauna from Marmot Cave is limited to eight taxa shared with Sandia Cave. Two new records of Gymnogyps californianus (California Condor) are reported from these sites, as well as new records of Lagopus sp. (ptarmigan), Aegolius funereus (Boreal Owl), and Micrathene whitneyi (Elf Owl) from New Mexico. Two new radiocarbon dates on fossil G. californianus from Sandia and Marmot cave are reported at 10 795 ± 50 and 25 090 ± 220 14C years before present (B.P.), respectively. These collections provide further evidence for mixed avian communities in New Mexico during the late Pleistocene and are similar to other cave avifaunas of comparable age from the Great Basin and Rocky Mountain regions. The birds from Sandia Cave that are shared with other fossil avifaunas include species currently found in arctic tundra, boreal, and steppe habitats, as well as open, xeric communities. This collection provides additional evidence for widespread steppe-tundra, shrub, and subalpine forest environments at lower elevations of western North America during the late Pleistocene.

Boreal Owl (Aegolius funereus)

1993 ◽  
Author(s):  
G. D. Hayward ◽  
P. H. Hayward
Keyword(s):  
Aegolius Funereus ◽  
Boreal Owl

scholarly journals Win – and stay, but not too long: cavity selection by Boreal Owls to minimize nest predation by Pine Marten

2021 ◽  
Author(s):  
Geir A. Sonerud
Keyword(s):  
Nest Predation ◽  
Site Fidelity ◽  
Nest Site ◽  
Nest Site Selection ◽  
Pine Marten ◽  
Aegolius Funereus ◽  
Young Males ◽  
Nest Sites ◽  
Nest Boxes ◽  
Boreal Owl

AbstractSite fidelity after successful nesting and site shift after nest predation (win–stay, lose–shift) is a well-documented adaptation to spatially heterogeneous and temporally auto-correlated predation risk. However, site shift even after a successful nesting (win–shift) may become a better tactic than site fidelity (win–stay), if a successful nest site becomes more risky until the next nesting opportunity, and if new low-risk nest sites regularly appear. Correspondingly, selecting a new non-used nest site may become a better tactic than selecting one previously used successfully by a conspecific. I studied this dynamic by focusing on nest cavities that may be available for many years, and using nest boxes to allow an experimental design. At localities where Boreal Owls (Aegolius funereus) had nested successfully, a dyad of nest boxes was made available each year, one box in the original nest tree and one in a new tree for the season, each containing either old nest material from the successful nesting or new wood shavings. Boreal owls were more likely to select the box in the new tree when more years had elapsed since the successful nesting and since a box was installed in the original nest tree, independent of box content. The pattern of selection differed between young and old individuals for males, but not females. Young males based their selection of nest tree mainly on box content, while old males based it on time elapsed since the successful nesting in the original nest tree and how long a box had been present there. The probability of depredation of Boreal Owl nests by Pine Marten (Martes martes) has previously been found to increase with cavity age and number of nesting seasons elapsed since the previous successful nesting. This pattern of nest predation thus predicted the pattern of nest site selection found.

scholarly journals Diet of boreal owl (Aegolius funereus) in lowlands of north-eastern Poland

2018 ◽  
Vol 12 (1) ◽  
pp. 41-45
Author(s):  
Tomasz Tumiel ◽  
Paweł Mirski
Keyword(s):  
Bird Species ◽  
Polish Population ◽  
Passerine Birds ◽  
Main Prey ◽  
Aegolius Funereus ◽  
Tree Hollows ◽  
North Eastern ◽  
Boreal Owl ◽  
Prey Items ◽  
Scarce Data

Abstract Although studies on many owl species diets are common, there are only scarce data on the diet of the boreal owl from the lowlands of Eastern Europe. We have therefore studied its diet in one of the most important Polish population areas, the Knyszyńska Forest (north-eastern Poland). Pellets were gathered between February and June in 2006, 2012–2016 from tree hollows and the ground underneath. Altogether 178 pellets and six sets of pellet fragments were collected from 19 different sites. Eight mammal and eight bird species were identified among the 213 prey items found in the gathered material. Small mammals dominated, both in prey number (88.3%) and biomass (85.1%). Bank vole proved to be the main prey (over 40% of prey numbers), while Microtus voles (27.3%), small passerine birds (11.7%) and shrews (7.5%) were important alternative prey. Diet range proved to be similar to other sites in Europe.

scholarly journals Monopis jussii, a new species (Lepidoptera, Tineidae) inhabiting nests of the Boreal owl (Aegolius funereus)

ZooKeys ◽  
2020 ◽  
Vol 992 ◽  
pp. 157-181
Author(s):  
Marko Mutanen ◽  
Peter Huemer ◽  
Jonna Autto ◽  
Ole Karsholt ◽  
Lauri Kaila
Keyword(s):  
New Species ◽  
Dna Barcode ◽  
Parus Major ◽  
Species Discovery ◽  
Aegolius Funereus ◽  
The Alps ◽  
Suitable Habitats ◽  
Boreal Owl ◽  
A New Species ◽  
Ural Owl

Monopis jussii Kaila, Mutanen, Huemer, Karsholt & Autto, sp. nov. (Lepidoptera, Tineidae) is described as a new species. It is closely related to the widespread and common M. laevigella ([Denis & Schiffermüller], 1775), but differs in its distinct COI DNA barcode sequences, four examined nuclear loci as well as details in forewing coloration and pattern. Most reared specimens of M. jussii have emerged from the nest remnants of the Boreal owl (Aegolius funereus (Linnaeus, 1758)), but also nests of the Ural owl (Strix uralensis Pallas, 1771) and the Great tit (Parus major Linnaeus, 1758) have been observed as suitable habitats. Based on the present knowledge, the new species has a boreo-montane distribution as it is recorded only from northern Europe and the Alps. Several extensive rearing experiments from Strix spp. nest remnants from southern Finland did not produce any M. jussii, but thousands of M. laevigella, suggesting that the species is lacking in the area or, more unlikely, that the nest of these owl species do not serve as good habitat for the new species. This unexpected species discovery highlights, once again, the usefulness of DNA barcoding in revealing the cryptic layers of biodiversity. To serve stability we select a neotype for Tinea laevigella [Denis & Schiffermüller], 1775, and discuss the complicated synonymy and nomenclature of this species.

scholarly journals New Data on Phylogeography of the Boreal Owl Aegolius funereus in Eurasia

Zoodiversity ◽  
2020 ◽  
Vol 54 (6) ◽  
pp. 523-534
Author(s):  
Homel ◽  
Nikiforov ◽  
Kheidorova ◽  
Valnisty
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Rapid Expansion ◽  
The West ◽  
High Genetic Diversity ◽  
Aegolius Funereus ◽  
Population Genetic Differentiation ◽  
The Past ◽  
Boreal Owl ◽  
Mtdna Polymorphism

In the article the research’s results of phylogeography, genetic diversity, genetic structure and demographic characteristics of the Boreal Owl population in Eurasia are given. The first domain of control region of mtDNA is used as a genetic marker. The sample size was 59 specimens. The population of Boreal Owl is characteristic of high genetic diversity and it has signs of rapid expansion in the past as revealed by analysis of CR1 mtDNA polymorphism. Genetic differentiation between birds from the west and the east part of the species range is shown. The level of found population genetic differentiation isn’t high that can be explained by gene flow in the past and possible at the present time. We didn’t reveal any signs of genetic differentiation for Boreal Owl population according to subspecies (between A. f. funereus and A. f. pallens) which are distinguished for the studying area.

Boreal Owl (Aegolius funereus)

1993 ◽  
Author(s):  
G. D. Hayward ◽  
P. H. Hayward
Keyword(s):  
Aegolius Funereus ◽  
Boreal Owl
Sign in / Sign up

Export Citation Format

Share Document