Barred Owl Strix Varia
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Owl Adaptations Teacher Pre-Visit Packet Welcome!
Owl Adaptations Teacher Pre-Visit Packet Welcome! Dear Teacher, Thank you for booking a program with the Audubon Center for Birds of Prey! We are very excited to meet you and to teach your students. This packet was designed to help you be able to prepare your students for their Owl Adaptations program with the Audubon Center. The following pages include vocabulary your students should be familiar with, a reading list, lesson ideas, and more! I hope these ideas help you and your students better connect to birds of prey, and extend their learning around their program with the Audubon Center. If you have any questions or concerns, please do not hesitate to contact me. See you soon! Laura VonMutius Education Manager Audubon Center for Birds of Prey [email protected] 407- 644 - 0190 Vocabulary Before you visit the Center, familiarize your students with some important vocabulary terms that we may use throughout the program: 1. Adaptation: adjustment to meet certain environmental changes. 2. Birds of Prey: birds, which generally prey upon other animals for food; generally meaning eagles, hawks, kites, falcons, ospreys, owls, and vul- tures; also known as Raptors. 3. Crepuscular: most active in the twilight hours (dawn and/or dusk). 4. Camouflage: markings possessed by an animal which helps it blend in with its surroundings. 5. Diurnal: active during the daytime, as opposed to nocturnal. 6. Environment: surroundings in which an organism lives 7. Facial Disks: a disk shaped mask on an owl, formed by very small feath- ers which fan out from the eyes to the ears. -
The Eagle Owl in Britain Tim Melling, Steve Dudley and Paul Doherty
The Eagle Owl in Britain Tim Melling, Steve Dudley and Paul Doherty Richard Allen ABSTRACT Interest in the Eagle Owl Bubo bubo in Britain has increased during the past decade, particularly in relation to two well-known breeding pairs in northern England. An increase in the numbers being reported has led to calls for Eagle Owl to be re-admitted to the British List.This paper examines the BOURC’s previous reviews, which led to the species’ removal from the British List in 1996, the historical status of Eagle Owl in captivity, and other data relating to this species, in order to assess the likelihood of natural vagrancy. he Eagle Owl Bubo bubo is a widespread century (Yalden 1999). It is also surprising that, and ecologically adaptable species, for an obvious and revered species, there are no Toccupying a range of habitats in Europe, lingering tales, legends, myths or folklore from the mountains of southern Spain to the relating to Eagle Owls in British literature forests of northern Scandinavia. It is therefore (Harrison & Reid-Henry 1988). difficult to explain why the species apparently did not persist in Britain beyond the Mesolithic Recent historical status and BOURC reviews (c. 9,000–10,000 years BP; Stewart 2007). One Eagle Owl was included in all the BOU lists possible explanation is that it was exterminated published before 1992. In the first (BOU 1883) by humans (Mikkola 1983), although this seems and second (BOU 1915) it was described as a unlikely given that more conspicuous predators, scarce/occasional visitor, the latter stating also such as Wolf Canis lupus and Brown Bear Ursus that specimens were ‘taken in the Shetland and arctos, survived until relatively recent times. -
Gtr Pnw343.Pdf
Abstract Marcot, Bruce G. 1995. Owls of old forests of the world. Gen. Tech. Rep. PNW- GTR-343. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 64 p. A review of literature on habitat associations of owls of the world revealed that about 83 species of owls among 18 genera are known or suspected to be closely asso- ciated with old forests. Old forest is defined as old-growth or undisturbed forests, typically with dense canopies. The 83 owl species include 70 tropical and 13 tem- perate forms. Specific habitat associations have been studied for only 12 species (7 tropical and 5 temperate), whereas about 71 species (63 tropical and 8 temperate) remain mostly unstudied. Some 26 species (31 percent of all owls known or sus- pected to be associated with old forests in the tropics) are entirely or mostly restricted to tropical islands. Threats to old-forest owls, particularly the island forms, include conversion of old upland forests, use of pesticides, loss of riparian gallery forests, and loss of trees with cavities for nests or roosts. Conservation of old-forest owls should include (1) studies and inventories of habitat associations, particularly for little-studied tropical and insular species; (2) protection of specific, existing temperate and tropical old-forest tracts; and (3) studies to determine if reforestation and vege- tation manipulation can restore or maintain habitat conditions. An appendix describes vocalizations of all species of Strix and the related genus Ciccaba. Keywords: Owls, old growth, old-growth forest, late-successional forests, spotted owl, owl calls, owl conservation, tropical forests, literature review. -
Owls-Of-Nh.Pdf
Lucky owlers may spot the stunning great gray owl – but only in rare years when prey is sparse in its Arctic habitat. ©ALAN BRIERE PHOTO 4 January/February 2009 • WILDLIFE JOURNAL OWLSof NEW HAMPSHIRE Remarkable birds of prey take shelter in our winter woods wls hold a special place in human culture and folklore. The bright yellow and black eyes surrounded by an orange facial disc Oimage of the wise old owl pervades our literature and conjures and a white throat patch. up childhood memories of bedtime stories. Perhaps it’s their circular Like most owls, great horned owls are not big on building their faces and big eyes that promote those anthropomorphic analogies, own nests. They usually claim an old stick nest of another species or maybe it is owls’ generally nocturnal habits that give them an air – perhaps one originally built by a crow, raven or red-tailed hawk. In of mystery and fascination. New Hampshire, great horned owls favor nest- New Hampshire’s woods and swamps are ing in great blue heron nests in beaver-swamp home to several species of owls. Four owl spe- BY IAIN MACLEOD rookeries. Many times, while checking rooker- cies regularly nest here: great horned, barred, ies in early spring, I’ll see the telltale feather Eastern screech and Northern saw-whet. One other species, the tufts sticking up over the edge of a nest right in the middle of all long-eared owl, nests sporadically in the northern part of the state. the herons. Later in the spring, I’ll return and see a big fluffy owlet None of these species is rare enough to be listed in the N.H. -
Barred Owl (Strix Varia)
Wild Things in Your Woodlands Barred Owl (Strix varia) The barred owl is a large bird, up to 20 inches long, with a wingspan of 44 inches. It is gray-brown in color, with whitish streaks on the back and head, brown horizontal bars on its white chest, and vertical bars on its belly. This owl has a round face without ear tufts, and a whitish facial disk with dark concentric rings around brown eyes. Males and females look similar, but females can weigh about one third more than males. “Who cooks for you, who cooks for you all?” This is the familiar call of the barred owl defending its territory or attracting a mate. If you live in or near a heavily wooded area with mature forest, particularly if there is also a stream or other body of water nearby, this sound is probably familiar. Barred owls are the most vocal of our owls, and most often are heard calling early at night and at dawn. They call year-round, but courtship activities begin in February and breeding takes place primarily in March and April. Nesting in cavities or abandoned hawk, squirrel, or crow nests, the female sits on a nest of 1-5 eggs for 28 to 33 days. During this time, the male brings food to her. Once the eggs have hatched, both parents care for the fledglings for at least 4 months. Barred owls mate for life, reuse their nest site for many years, and maintain territories from 200 – 400 acres in size. Barred owls are strongly territorial and remain in their territories for most, if not all, of the year. -
Some Notes on the Iconography of Kerr No. 6994 by Erik Boot ([email protected]) August 5, 2003
Some Notes on the Iconography of Kerr No. 6994 by Erik Boot ([email protected]) August 5, 2003 *************************************************************************** Kerr No. 6994 (photograph by Justin Kerr) Kerr No. 6994, at first viewing, seems to contain an iconographic narrative that might be easily interpreted: there are two pairs of anthropomorphic beings, each separated by a tree with a bird and a bird with a serpent and a flower. Each pair of anthropomorphic beings has on its left an aged male figure while on the right there is a young male figure. In both cases the aged anthropomorphic being has T24 MIRROR markings, indicative of his status as a god. One of the aged anthropomorphic beings has a jaguar-like ear and a necklace with possibly a spiny shell. Although very tentative, these aged male figures may be representations of a headdressless God L. In one case also the young anthropomorphic being has a T24 MIRROR marking on his body. In the middle of each pair there is some kind of offering (a vessel with some unknown contents and possibly some kind of belt or headband). Of particular interest are the images that separate the two pairs. One of these images depicts a tree growing from an anthropomorphic possibly even skull-like head. The tree has four branches and each branch seems to end in some kind of flower. On the lowest branch one can find a bird which faces the viewer. It might be possible to identity this particular bird species. This bird seems to have ears or horns at each side of its head. -
Barred Owl (Strix Varia)
Barred Owl (Strix varia) DID YOU KNOW: The rich baritone hooting you may hear in the woods that sounds like 'who cooks for you, who cooks for you-all' is the barred owl. They get their name from the dark barred pattern on the feathers. EATING HABITS: Barred owls are well-adapted for hunting small mammals, reptiles and birds; they will even eat fish! Their sharp talons and beak are perfect for grabbing, killing and tearing the meat. They seek prey from a perch or while flying low through the forest. They are most active at night, but will also hunt early in the morning and at dusk. The male hunts for food and brings it to the nest when the female is with the young. Lakeside Nature Center 4701 E Gregory, KCMO 64132 816-513-8960 www.lakesidenaturecenter.org THE YOUNG: The adult pair chooses a large hollow in a tree to make their nest. Sometimes they may even use an old abandoned hawk or squirrel nest. The pair calls to each other often when preparing to raise their family. The female lays two to four eggs that hatch in about 30 days. The babies look like big puffballs while they are covered with down. The feathers soon begin to grow in, and they are able to fly in about six weeks. HABITAT (HOME): Barred owls can be found from the East Coast to the Rocky Mountains, from Canada to the Gulf Coast. Woodlands that are near rivers and other wetlands are prime barred owl habitat. Locally you can hear or see barred owls where the Missouri and the Blue Rivers run through wooded areas. -
DIET CHANGES in BREEDING TAWNY OWLS &Lpar;<I>Strix Aluco</I>&Rpar;
j Raptor Res. 26(4):239-242 ¸ 1992 The Raptor ResearchFoundation, Inc. DIET CHANGES IN BREEDING TAWNY OWLS (Strix aluco) DAVID A. KIRK 1 Departmentof Zoology,2 TillydroneAvenue, University of Aberdeen, Aberdeen,Scotland, U.K. AB9 2TN ABSTVO,CT.--I examinedthe contentsof Tawny Owl (Strix alucosylvatica) pellets, between April 1977 and February 1978, in mixed woodlandand gardensin northeastSuffolk, England. Six mammal, 14 bird and 5 invertebratespecies were recordedin a sample of 105 pellets. Overall, the Wood Mouse (Apodemussylvaticus) was the most frequently taken mammal prey and the House Sparrow (Passer domesticus)was the mostfrequently identified bird prey. Two typesof seasonaldiet changewere found; first, a shift from mammal prey in winter to bird prey in the breedingseason, and second,a shift from smallprey in the winter to medium-sized(> 30 g) prey in the breedingseason. Contrary to somefindings elsewherein England, birds, rather than mammals, contributedsignificantly to Tawny Owl diet during the breedingseason. Cambiosen la dieta de bfihosde la especieStrix alucodurante el periodode reproduccibn EXTRACTO.--Heexaminado el contenidode egagrbpilasdel bfiho de la especieStrix alucosylvatica, entre abril de 1977 y febrerode 1978, en florestasy huertosdel norestede Suffolk, Inglaterra. Seismamlferos, catorceaves y cincoespecies invertebradas fueron registradosen una muestrade 105 egagrbpilas.En el total, entre los mamlferos,el roedorApodemus sylvaticus fue el que conmils frecuenciafue presade estos bfihos;y entre las aves,la presaidentificada con mils frecuenciafue el gorribnPasser domesticus. Dos tipos de cambib en la dieta estacionalfueron observados:primero, un cambib de clase de presa: de mamlferosen invierno a la de avesen la estacibnreproductora; y segundo,un cambiben el tamafio de las presas:de pequefiasen el inviernoa medianas(>30 g) en la estacibnreproductora. -
Ketupa Zeylonensis) Released More Than a Decade After Admission to a Wildlife Rescue Centre in Hong Kong SAR China
Survivorship and dispersal ability of a rehabilitated Brown Fish Owl (Ketupa zeylonensis) released more than a decade after admission to a wildlife rescue centre in Hong Kong SAR China The Brown Fish Owl, Sam, in captivity at Kadoorie Farm and Botanic Garden April 2008 Kadoorie Farm and Botanic Garden Publication Series: No 3 Survivorship and dispersal ability of a rehabilitated Brown Fish Owl (Ketupa zeylonensis) released more than a decade after admission to a wildlife rescue centre in Hong Kong SAR China Authors Rupert Griffiths¹ and Gary Ades ¹Present Address: The Royal Society for the Prevention of Cruelty to Animals, West Hatch Wildlife Centre, Taunton, Somerset, TA 35RT, United Kingdom Citation Kadoorie Farm and Botanic Garden. 2008. Survivorship and dispersal ability of a rehabilitated Brown Fish Owl (Ketupa zeylonensis) released more than a decade after admission to a wildlife rescue centre in Hong Kong SAR China. Kadoorie Farm and Botanic Garden Publication Series No.3. Kadoorie Farm and Botanic Garden, Hong Kong Special Adminstrative Region. Copyright © Kadoorie Farm and Botanic Garden Corporation Lam Kam Road, Tai Po, N.T. Hong Kong Special Adminstrative Region April 2008 ii CONTENTS Page Execuitve Summary 1 Introduction 2 Methodology 3 Results 4 Discussion 4 Acknowledgments 5 References 5 Table 7 Figures 8 iii EXECUTIVE SUMMARY A Brown Fish Owl (Ketupa zeylonensis) which had been maintained in captivity at Kadoorie Farm & Botanic Garden, for 11 years following its rescue, was released at a site in Sai Kung in Hong Kong on 28th November 2003. Post-release monitoring was carried out and the bird was confirmed to have survived for at least 3 months before the radio-transmitter was dropped. -
CALIFORNIA SPOTTED OWL (Strix Occidentalis Occidentalis) Jeff N
II SPECIES ACCOUNTS Andy Birch PDF of California Spotted Owl account from: Shuford, W. D., and Gardali, T., editors. 2008. California Bird Species of Special Concern: A ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California. Studies of Western Birds 1. Western Field Ornithologists, Camarillo, California, and California Department of Fish and Game, Sacramento. California Bird Species of Special Concern CALIFORNIA SPOTTED OWL (Strix occidentalis occidentalis) Jeff N. Davis and Gordon I. Gould Jr. Criteria Scores Population Trend 10 Range Trend 0 Population Size 7.5 Range Size 5 Endemism 10 Population Concentration 0 Threats 15 Year-round Range Winter-only Range County Boundaries Water Bodies Kilometers 100 50 0 100 Year-round range of the California Spotted Owl in California. Essentially resident, though in winter some birds in the Sierra Nevada descend to lower elevations, where, at least to the south, small numbers of owls also occur year round. Outline of overall range stable but numbers have declined. California Spotted Owl Studies of Western Birds 1:227–233, 2008 227 Studies of Western Birds No. 1 SPECIAL CONCERN PRIORITY occurrence: one along the west slope of the Sierra Nevada from eastern Tehama County south to Currently considered a Bird Species of Special Tulare County, the other in the mountains of Concern (year round), priority 2. Included on southern California from Santa Barbara, Ventura, the special concern list since its inception, either and southwestern Kern counties southeast to together with S. o. caurina (Remsen 1978, 2nd central San Diego County. Elevations of known priority) or by itself (CDFG 1992). -
<I>STRIX ALUCO</I>
j Raptor Res. 28(4):246-252 ¸ 1994 The Raptor ResearchFoundation, Inc. DIET OF URBAN AND SUBURBAN TAWNY OWLS (STRIX ALUCO) IN THE BREEDING SEASON ANDRZEJ ZALEWSKI Mammal ResearchInstitute, Polish Academy of Sciences,77-230 Biatowieœa, Poland ABSTI•CT.--The diet of tawny owls (Strix aluco)was studiedduring the breedingseasons 1988-90 in an urbanand a suburbanarea in Torufi, Poland.Two amphibian,18 bird,and 14 mammalspecies were recordedas prey in a sampleof 312 pellets.From 600 prey itemsfound in bothsites, the housesparrow (Passerdomesticus) was the mostfrequently taken bird prey and the commonvole (Microtus arvalis) the mostfrequently taken mammal prey. Significantlymore mammals than birdswere taken at the suburban sitethan at the urbansite (P < 0.001). At the urbansite, the proportionof birds(except for tits [Parus spp.]and housesparrows) increased over the courseof the breedingseason, while the proportionof Apodemusspp. decreased.Similarly, at the suburbansite the proportionof all birds increasedand the proportionof Microtusspp. decreased. House sparrows at the urban site and Eurasiantree sparrows (Passermontanus) and tits at the suburbansite were takenin higherproportion than their availability. An examinationof dietarystudies from elsewhere in Europeindicated that therewas a positivecorrelation betweenmean prey sizeand increasingproportion of birdsin tawny owl diets(P = 0.003). KEY WORDS: tawnyowl; diet;urban and rural area;bird selection;prey-size selection. Dieta de Strixaluco urbano y suburbanoen la estaci6nreproductiva RESUMEN.--Seestudi6 la dietade Strixaluco durante las estacionesreproductivas de 1988 a 1990 en un fireaurbana y suburbanaen Torun, Polonia.Dos antibios, 18 avesy 14 especiesde mam•ferosfueron registradoscomo presa en una muestrade 312 egagr6pilas.De 600 categorlasde presasencontradas en ambossitios, Passer domesticus rue el ave-presamils frecuentejunto al mfimfferoMicrotus arvalis. -
Montana Owl Workshop April 19-24, 2019 © 2018
MONTANA OWL WORKSHOP APRIL 19-24, 2019 © 2018 High, wide, and handsome, Montana is the country’s fourth largest state, encompassing 145,392 square miles (376,564 square kilometers), and has one of the lowest human densities of all states; about six to seven people per square mile. Its biological diversity and variable climate reflects its immensity. Among its alpine tundra, coniferous forests, plains, intermountain valleys, mountains, marshes, and river breaks, Montana lists 433 species of birds, 109 species of mammals, 13 species of amphibians, and 18 species of reptiles. Montana also maintains about 2,080 species of native plants. Join researchers for four full days of learning how to survey, locate, and observe owls in the field. Montana boasts the largest number of breeding owl species in any state within the United States. Fifteen species of owls occur in Montana, of which 14 species breed: American Barn Owl, Flammulated Owl, Eastern Screech Owl, Western Screech Owl, Great Horned Owl, Barred Owl, Great Gray Owl, Northern Hawk Owl, Northern Pygmy Owl, Burrowing Owl, Boreal Owl, Northern Saw-whet Owl, Long-eared Owl, and Short-eared Owl. Snowy Owls are winter visitors only. Although all species will not be seen, chances are good for five to seven species, and with some luck, eight species are possible. Highlights can include Great Gray Owl, Northern Pygmy Owl, Boreal Owl, and Northern Saw-whet Owl. It’s not often the public has an opportunity to follow wildlife researchers on projects. During this educational workshop, we will meet and observe field researchers of the Owl Research Institute (ORI) who have been conducting long-term studies on several species of owls.