Top PDF Buteo Jamaicensis: The Red Tailed Hawk

Buteo Jamaicensis: The Red Tailed Hawk

Buteo Jamaicensis: The Red Tailed Hawk

The first The method second a uses is per ounce I usually let the commercial in mixed method acid phosphoric procedure aluminum the uses to one gum of 1:1 a solution, ratio with four dro[r]

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EXPLORING RED-TAILED HAWK MIGRATION USING STABLE ISOTOPE ANALYSIS AND DNA SEXING TECHNIQUES

EXPLORING RED-TAILED HAWK MIGRATION USING STABLE ISOTOPE ANALYSIS AND DNA SEXING TECHNIQUES

management decisions (Hughes 1998; Ito et al. 2003). Unfortunately, for many avian species it is difficult to determine sex from morphometrics and plumage (Ito et al. 2003). This is particularly true for several monomorphic raptor species. For example, red-tailed hawks (Buteo jamaicensis) lack plumage differences between the sexes, but show some sexual size dimorphism (Palmer 1988). However, the size differences between male and female red-tailed hawks have not been quantified in a manner useful for field situations. Although it is possible to determine the sex of individual birds by observing copulation and courtship behaviors (Catry et al. 1999), or by cloacal examination in some species (Boersma and Davies 1987; Gray and Hamer 2001), these methods are limited to the breeding season.
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IMPACTS OF WIND ENERGY DEVELOPMENT ON BREEDING BUTEO HAWKS IN THE COLUMBIA PLATEAU ECOREGION

IMPACTS OF WIND ENERGY DEVELOPMENT ON BREEDING BUTEO HAWKS IN THE COLUMBIA PLATEAU ECOREGION

Post-construction raptor fatality and nest monitoring is typically conducted at wind energy projects nationwide. However, pre- and post-construction surveys may fail to locate all breeding pairs and most studies at individual wind projects lack the necessary sample size or survey design to assess the effects of turbines on nesting raptors after construction. To address these potential issues, I used an information-theoretic approach to examine the influence of multiple spatial and temporal variables on reproductive success, post-fledging survival, and the distribution of breeding pairs from three sympatric Buteo species in the Columbia Plateau Ecoregion (CPE). Although the probability of detecting breeding pairs was relatively high (71-90%, ± 0.09-0.05), and sampling units were likely to be re-occupied (76-100% ± 0.14-0.10), I was not able to locate all nests in the 2010 or 2011 breeding seasons despite multiple surveys for each species. The occurrence of breeding pairs was not associated with wind turbines or surrounding habitat types; instead ferruginous hawks (Buteo regalis) and red-tailed hawks (Buteo jamaicensis) selected areas in relation to the density of nesting substrates. Swainson’s hawks (Buteo swainsoni) were more likely to nest in areas with other
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Parental care by lone male Ferruginous Hawks ( Buteo regalis ), Rough-legged Hawks ( Buteo lagopus ), and Great Horned Owls ( Bubo virginianus ) was limited to providing food

Parental care by lone male Ferruginous Hawks ( Buteo regalis ), Rough-legged Hawks ( Buteo lagopus ), and Great Horned Owls ( Bubo virginianus ) was limited to providing food

in clear contrast to our observations of limited par - ental care, a study of a captive male Red-tailed Hawk (Buteojamaicensis; Hamerstrom and Hamerstrom 1971) suggests that males of this species can participate in all facets of reproduction. the hawk studied had been taken from its nest at the nestling stage and used for falconry. its gender was confirmed by ejaculation elicit- ed by the falconer on whom the hawk was imprinted. the male hawk wove sticks into a nest base, formed a lined nest cup when straw was provided, covered a chicken egg, and developed a 5-cm × 6-cm brood patch, but without significant blood vascularization. the male hawk accepted a total of three Red-tailed Hawk nest - lings 1, 6 and 21 days old offered over 2 years. Without prior experience, it responded positively to the vocal- izations of the newly introduced 1 and 6-day-old nest - lings and displayed great care closing its talons and slid- ing mostly on his tarsus over the nestlings to brood. it fed the nestlings pieces of flesh until they were 9 days of age. the pieces were not regurgitated, but still moist from saliva that seemed to flow more during feeding. after 9 days, the male tended to lay small pieces of meat on the nest rim for the nestlings to eat. By 24 days, the nestlings began to tear and consume mice and day-old chickens on their own. When the nestlings were 16 days old, the male gradually stopped brooding them at night, in a mid-May Wisconsin climate.
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Guide to the Vascular Flora of Kitty Hawk Woods (Dare County, NC).

Guide to the Vascular Flora of Kitty Hawk Woods (Dare County, NC).

One of ten reserves in the North Carolina Coastal Reserve system, Kitty Hawk Woods (Dare County, North Carolina) is a nationally significant natural area that is comprised of 760 ha of forested wetlands, sandy wooded ridges, and brackish marshes. It contains one of the last remaining examples of the rare Maritime Deciduous Forest (S1 G1) community type and the most extensive example of Maritime Swamp Forest (S1S2 G2) in North Carolina. Topographically, Kitty Hawk is unique along North Carolina‘s Outer Banks by being situated on a series of north to south running, parallel, relict beach ridges, which are evidence of the seaward development of the island. These relict dunes and intervening swales provide the framework on which the plant communities have developed. In order to effectively manage and preserve the biodiversity of KHW, comprehensive resource inventory and monitoring were identified as top priority management goals in the Kitty Hawk Woods
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CMD Trident Hawk Cobra Storage Array Controllers Aug95 pdf

CMD Trident Hawk Cobra Storage Array Controllers Aug95 pdf

SCSI Port Error Log Diagram for Disk Devloe$ SCSI Port Error Log Diagram for Tape Devices SCSI Command Error Log for Disk Example SCSI Command Error Log Structure for Tape Deviees Exampl[r]

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Discovery and full genome characterization of a new SIV lineage infecting red tailed guenons (Cercopithecus ascanius schmidti) in Kibale National Park, Uganda

Discovery and full genome characterization of a new SIV lineage infecting red tailed guenons (Cercopithecus ascanius schmidti) in Kibale National Park, Uganda

analysis that included all three SIVs isolated from red- tailed guenons as well as other representative SIV lineages and determined the time to most recent common ances- tor (TMRCA) using Bayesian inference and calibration of the molecular clock using an the estimated 10,000 year old separation of the drill (Mandrill leucophaeus) SIVs on mainland Africa from those on Bioko Island, Equatorial Guinea, as previously described [8]. The root of the tree is estimated to be 33,394 years before present (ybp) (95% highest posterior density (HPD) = 19,157 – 51,174 ybp) and is thus comparable to that inferred for the Bioko mon- key SIV phylogenies (49,129 ybp; 95% HPD = 29,078 -
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Isolation, Characterization and Antibacterial Activity of Lanostane Triterpenoid from the Leaves of Stachyterpheta jamaicensis Linn Vahl

Isolation, Characterization and Antibacterial Activity of Lanostane Triterpenoid from the Leaves of Stachyterpheta jamaicensis Linn Vahl

Fresh leaves and stems of S. jamaicensis were harvested from Edibe-Edibe, Calabar, Cross River State, Nigeria on 10 th January, 2008. Plant samples (flowers, stems and leaves) were identified by Dr. A. Nmeregini of the Taxonomy Section, Forestry Department, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria. Voucher Specimen No. SJ/3348 has been deposited at the Forestry Department of the University.

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Intense echolocation calls from two `whispering' bats, Artibeus
jamaicensis and Macrophyllum macrophyllum (Phyllostomidae)

Intense echolocation calls from two `whispering' bats, Artibeus jamaicensis and Macrophyllum macrophyllum (Phyllostomidae)

Thus, although A. jamaicensis and M. macrophyllum belong to the same family, they clearly differ in foraging strategy and the sensory tasks they have to solve, which is reflected in their different echolocation call patterns but not in the calls themselves. We hypothesised that the emitted intensity would also reflect these differences. We predicted that A. jamaicensis would emit rather faint echolocation calls, given the highly cluttered surroundings, where the challenge is to discriminate between food (fruit) and background (vegetation). Trawling bats also hunt close to background, i.e. the water; however, a calm water surface acts as an acoustic mirror reflecting almost all signal energy away from the bat (Schnitzler et al., 2003; Siemers et al., 2001). Hence, this habitat is probably acoustically closer to open space than to background cluttered space, which may explain why the loudest echolocation calls to date, source levels up to 137 dB SPL, have been determined for two trawling bats, Noctilio leporinus and Noctilio albiventris (Surlykke and Kalko, 2008). Thus, in spite of its smaller size, we expected the insectivorous trawling bat M. macrophyllum to emit much louder calls than A. jamaicensis, comparable with those of trawling bats from other families.
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A New Quadratic Binary Harris Hawk Optimization For Feature Selection

A New Quadratic Binary Harris Hawk Optimization For Feature Selection

In this study, we integrate the S-shaped and V-shaped transfer functions into the algorithm to convert the continuous HHO into the binary version (BHHO). Furthermore, we propose another new variant of HHO, namely quadratic binary Harris hawk optimization (QBHHO) for performance enhancement. Unlike BHHO, QBHHO integrates the quadratic transfer function for the conversion. The proposed BHHO and QBHHO algorithms are used to solve the feature selection problems as wrapper methods. Twenty-two datasets collected from UCI machine learning repository are employed to test the performance of proposed algorithms in this work. Moreover, five state-of-the-art methods include binary differential evolution (BDE), genetic algorithm (GA), binary multi-verse optimizer (BMVO), binary flower pollination algorithm (BFPA), and binary salp swarm algorithm (BSSA) are applied to examine the effectiveness of the proposed algorithm in feature selection. The experimental results reveal the superiority of QBHHO not only in the optimal classification performance but also the minimal number of selected features.
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Developments in Telemedicine & Telehealth. Thomas H. Hawk, III 1

Developments in Telemedicine & Telehealth. Thomas H. Hawk, III 1

Any physician wishing to practice telemedicine must be licensed in Florida pursuant to the definition of “telemedicine” as “the practice of medicine by a licensed Florida physician or [r]

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Meanings of Merlin:  An Analysis of the Hawk in Hopkins' "The Windhover" and Thoreau's Walden

Meanings of Merlin: An Analysis of the Hawk in Hopkins' "The Windhover" and Thoreau's Walden

Meanings of Merlin: An Analysis of the Hawk in Hopkins' "The Windhover" and Thoreau's Walden.. Jeff Horvath '03.[r]

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“Donald the Dove, Hillary the Hawk”:Gender in the 2016 Presidential Election

“Donald the Dove, Hillary the Hawk”:Gender in the 2016 Presidential Election

stereotypically masculine of traits, she was met with criticism. Trump’s personality, at once easier and harder to pin down, required for many writers the ability to hold multiple ideas in mind at one time. New York Times columnist Maureen Dowd, in her May 2016 column, “Donald the Dove, Hillary the Hawk,” commented on Trump’s many contradictions, citing both his tendency toward braggadocio and his “tender ego, pouty tweets, needy temperament, and obsession with hand sanitizer.” 15 Clinton,

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Hawk mimicry does not reduce attacks of cuckoos by highly aggressive hosts

Hawk mimicry does not reduce attacks of cuckoos by highly aggressive hosts

Successful nest defense forces cuckoos to develop more effective parasitism strategies, and mimicking hawks (Accipiter spp.) is thought to be an adaption of cuckoos against host attacks (Langmore and Kilner 2010; Welber- gen and Davies 2011; Feeney et al. 2012; Thorogood and Davies 2013a, b). Hawks are typical small birds of prey, and pose more direct threats to adult birds (Götmark and Post 1996). Resemblance to hawks enables cuckoos to confuse and alarm hosts, and reduce attacks from hosts (Davies and Welbergen 2008; Welbergen and Davies 2011). A recent study discovered that calls of female common cuckoos mimic those of sparrowhawks to some extent, which resulted in similar intimidation (York and Davies 2017). However, the effectiveness of cuckoos’ hawk mimicry has only been demonstrated for a few host species, among which only reed warblers (Acrocephalus scirpaceus) are main hosts of common cuckoos (Cuculus canorus) (Davies and Welbergen 2008; Langmore and Kilner 2010; Welbergen and Davies 2011; Thorogood and Davies 2013b; Liang 2017; York and Davies 2017). Reed warblers lack aggressiveness, and are not strong nest defenders, although nest defense levels in reed warblers vary significantly between different species (Montgom- erie and Weatherhead 1988). Therefore, results from studies on reed warblers cannot be extrapolated to other hosts. In fact, many hosts can accurately identify the differences between cuckoos and sparrowhawks, and respond with different defense levels (Duckworth 1991; Grim 2005; Welbergen and Davies 2008; Campobello and Sealy 2010; Feeney et  al. 2012; Trnka and Prokop 2012; Li et al. 2015; Liang and Møller 2015; Yu et al. 2016, 2017). For example, Smith and Hosking (1955) discov- ered that many small passerines (not the main hosts of cuckoos) fear sparrowhawk dummies, but attack cuckoo dummies aggressively, suggesting their abilities to distin- guish the two. Paired experiments with great reed war- blers (Acrocephalus arundinaceus) by Trnka and Prokop (2012) revealed that, when presented simultaneously with paired dummies (of common cuckoo, sparrow- hawk Accipiter nisus, and turtle dove Streptopelia turtur), great reed warblers exhibit aggressive attack behaviors to both dummies, with higher attack intensities towards cuckoos and sparrowhawks. However, a study by Feeney et al. (2015) suggested that tawny-flanked prinia (Prinia subflava) hosts were equally aggressive towards female cuckoo finches (Anomalospiza imberbis) and southern red bishops (Euplectes orix), suggesting successful mim- icry of female bishops by female cuckoo finches.
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Like a hawk among house sparrows: Kauto star, a steeplechasing legend

Like a hawk among house sparrows: Kauto star, a steeplechasing legend

pressure when it matters most and when everyone is watching is considered to be the true indicator of sporting greatness.48 Kauto Star performed under pressure and on the biggest stages [r]

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Pitfalls in using Weibull tailed distributions

Pitfalls in using Weibull tailed distributions

By assuming that the underlying distribution belongs to the domain of attraction of an extreme value distribution, one can extrapolate the data to a far tail region so that a rare event can be predicted. However, when the distribution is in the domain of attraction of a Gumbel distribution, the extrapolation is quite limited generally in comparison with a heavy tailed distribution. In view of this drawback, a Weibull tailed distribution has been studied recently. Some methods for choosing the sample fraction in estimating the Weibull tail coefficient and some bias reduction estimators have been proposed in the literature. In this paper, we show that the theoretical optimal sample fraction does not exist and a bias reduction estimator does not always produce a smaller mean squared error than a biased estimator. These are different from using a heavy tailed distribution. Further we propose a refined class of Weibull tailed distributions which are more useful in estimating high quantiles and extreme tail probabilities.
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Acidianus Tailed Spindle Virus: a New Archaeal Large Tailed Spindle Virus Discovered by Culture-Independent Methods

Acidianus Tailed Spindle Virus: a New Archaeal Large Tailed Spindle Virus Discovered by Culture-Independent Methods

ATSV replication in Acidianus hospitalis cultures. Based on the results of CRISPR spacer sequence matches and viral FISH analysis, we tested the ability of ATSV to establish virus replication in an Acidianus strain (Acidianus sp. CHAS) isolated from CHAS that was closely related at the level of 16S rRNA gene homology to A. hospitalis W1. After infection of an Acidianus sp. CHAS culture with filtered, concentrated virus obtained directly from a CHAS environmental sample, a 3-fold increase in the level of ATSV DNA was measured by qPCR, and long-tailed, large spindle-shaped vi- rus particles, similar to those seen in CsCl-purified environmental virus samples, were visible by TEM (Fig. 7A). The initial virus- infected culture was grown until 62 h postinfection and passaged into fresh medium. Virus and host were measured over a 136-h time course. The passaged cultured showed an 84- to 97-fold in- crease in virus production for two replicates (Fig. 7B). The peak level of viral DNA was seen after the peak and decline in the levels of cellular DNA, indicating the possibility of a lytic life cycle. Virus particles were again observed by TEM. No other virus-like particle morphologies were observed.
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 EVALUATION OF ANTIMICROBIAL ACTIVITY AND PRELIMINARY PHYTO-CHEMICAL STUDIES ON WHOLE PLANT OF STACHYTARPHETA JAMAICENSIS (L.)VAHL

 EVALUATION OF ANTIMICROBIAL ACTIVITY AND PRELIMINARY PHYTO-CHEMICAL STUDIES ON WHOLE PLANT OF STACHYTARPHETA JAMAICENSIS (L.)VAHL

The chloroform and alcoholic extract (1g) of the plant S. jamaicensis was accurately weighed and dissolved separately in 5ml of the solvent dimethyl formamide to make the stock solution containing 200mg/ml 8 . Solutions of both the extracts containing 20mg/ml were prepared from stock solution and used for serial dilution to get the concentration of 10mg/ml, 5mg/ml, 2.5mg/ml and 1.25mg/ml.

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Pitfalls in using Weibull tailed distributions

Pitfalls in using Weibull tailed distributions

Permanent repository link: http://openaccess.city.ac.uk/13131/ Link to published version: http://dx.doi.org/10.1016/j.jspi.2010.01.039 Copyright and reuse: City Research Online aims to m[r]

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Advances in the Modeling of Heavy-tailed Distributions

Advances in the Modeling of Heavy-tailed Distributions

Table 2.10 provides summary statistics for the rescaled data, which are clearly indicative of a heavy-tailed distribution. After comparing the density estimates obtained with and without exponential tilting, along with the choice of a gamma or exponential density functions as base densities, a TEP (d = 9, θ = 1.15) estimate which has no root in the right tail is a possible candidate. However, the corresponding Anderson-Darling test statistic, which is equal to 44.29 is large due to the fact that the deductible was not taken into consideration. As Figure 2.19 (a) reveals, the back-transformed density estimate does not provide a good fit around the mode of the distribution.
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