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Researchers Document Aviary Eggshell with Iridescence for the First Time 10 December 2014, by Bob Yirka
Researchers document aviary eggshell with iridescence for the first time 10 December 2014, by Bob Yirka they found to be made of calcium phosphate, calcium carbonate, and some other yet to be identified organic compounds) which gave the egg its glossy sheen. When they removed the cuticle from a portion of an egg sample—they found that it was blue underneath, but that the iridescence was gone. Thus, they concluded that the iridescent blue was due to a combination of the pigment and Photographs (a–c) of T. major, E. elegans and N. cuticle. maculosa nests. Average length breadth of eggs (a–c): 58 48 mm, 53 39 mm and 40 29 mm. Photo credits: The researchers can't say for sure why the bird Karsten Thomsen, Sam Houston and Shirley eggs have such features as they would appear to Sekarajasingham. Journal of the Royal Society Interface, draw attention to them, rather than help keep them Published 10 December 2014 . DOI: 10.1098/rsif.2014.1210 hidden. It seems possible that the iridescence actually causes the eggs to be more difficult to see in their particular environment to a particular type of prey. More likely, the researchers suggest is that (Phys.org)—A team of researchers with members eggs that stand out can be more easily spotted or from New Zealand, Czech Republic and the U.S. differentiated from other eggs from birds of the has documented for the first time an example of an same species, which could serve as a means of aviary egg that has iridescence. In their paper encouraging males to assist with incubation. -
Attracting Hummingbirds to Your Garden Using Native Plants
United States Department of Agriculture Attracting Hummingbirds to Your Garden Using Native Plants Black-chinned Hummingbird feeding on mountain larkspur, fireweed, and wild bergamot (clockwise from top) Forest National Publication April Service Headquarters Number FS-1046 2015 Hummingbird garden guide Many of us enjoy the beauty of flowers in our backyard and community gardens. Growing native plants adds important habitat for hummingbirds and other wildlife—especially pollinators. Even small backyard gardens can make a difference. Gardening connects us to nature and helps us better understand how nature works. This guide will help you create a hummingbird- What do hummingbirds, friendly garden. butterflies, and bees have in common? They all pollinate flowering plants. Broad-tailed Hummingbird feeding on scarlet gilia Hummingbirds are Why use native plants in restricted to the Americas with more your garden? than 325 species of Hummingbirds have evolved with hummingbirds in North, Central, and native plants, which are best adapted South America. to local growing seasons, climate, and soil. They prefer large, tubular flowers that are often (but not always) red in color. In this guide, we feature seven hummingbirds that breed in the United States. For each one, we also highlight two native plants found in its breeding range. These native plants are easy to grow, need little water once established, and offer hummingbirds abundant nectar. 2 Hummingbirds and pollination Ruby-throated Hummingbird feeding on the At rest, a hummer’s nectar and pollen heart beats an of blueberry flowers average of 480 beats per minute. On cold nights, it goes into What is pollination? torpor (hibernation- like state), and its Pollination is the process of moving pollen heart rate drops to (male gamete) from one flower to the ovary of another 45 to 180 beats per minute. -
Systematic Relationships and Biogeography of the Tracheophone Suboscines (Aves: Passeriformes)
MOLECULAR PHYLOGENETICS AND EVOLUTION Molecular Phylogenetics and Evolution 23 (2002) 499–512 www.academicpress.com Systematic relationships and biogeography of the tracheophone suboscines (Aves: Passeriformes) Martin Irestedt,a,b,* Jon Fjeldsaa,c Ulf S. Johansson,a,b and Per G.P. Ericsona a Department of Vertebrate Zoology and Molecular Systematics Laboratory, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden b Department of Zoology, University of Stockholm, SE-106 91 Stockholm, Sweden c Zoological Museum, University of Copenhagen, Copenhagen, Denmark Received 29 August 2001; received in revised form 17 January 2002 Abstract Based on their highly specialized ‘‘tracheophone’’ syrinx, the avian families Furnariidae (ovenbirds), Dendrocolaptidae (woodcreepers), Formicariidae (ground antbirds), Thamnophilidae (typical antbirds), Rhinocryptidae (tapaculos), and Conop- ophagidae (gnateaters) have long been recognized to constitute a monophyletic group of suboscine passerines. However, the monophyly of these families have been contested and their interrelationships are poorly understood, and this constrains the pos- sibilities for interpreting adaptive tendencies in this very diverse group. In this study we present a higher-level phylogeny and classification for the tracheophone birds based on phylogenetic analyses of sequence data obtained from 32 ingroup taxa. Both mitochondrial (cytochrome b) and nuclear genes (c-myc, RAG-1, and myoglobin) have been sequenced, and more than 3000 bp were subjected to parsimony and maximum-likelihood analyses. The phylogenetic signals in the mitochondrial and nuclear genes were compared and found to be very similar. The results from the analysis of the combined dataset (all genes, but with transitions at third codon positions in the cytochrome b excluded) partly corroborate previous phylogenetic hypotheses, but several novel arrangements were also suggested. -
Paper Describing Hummingbird-Sized Dinosaur Retracted 24 July 2020, by Bob Yirka
Paper describing hummingbird-sized dinosaur retracted 24 July 2020, by Bob Yirka teeth. Some in the field were so sure that it was a lizard and not a dinosaur that they wrote and uploaded a paper to the bioRxiv preprint server outlining their concerns. The authors of the paper then published a response addressing their concerns and refuting the skeptics' arguments. That was followed by another team reporting that they had found a similar fossil and after studying it, had deemed it to be a lizard. In reviewing both the paper and the evidence presented by others in the field, the editors at Nature chose to retract the paper. A CT scan of the skull of Oculudentavis by LI Gang, The researchers who published the original paper Oculudentavis means eye-tooth-bird, so named for its appear to be divided on their assessment of the distinctive features. Credit: Lars Schmitz retraction, with some insisting there was no reason for the paper to be retracted and others acknowledging that they had made a mistake when they classified their find as a dinosaur. In either The journal Nature has issued a retraction for a case, all of the researchers agree that the work paper it published March 11th called they did on the fossil was valid and thus the paper "Hummingbird-sized dinosaur from the Cretaceous could be used as a source by others in the future—it period of Myanmar." The editorial staff was alerted is only the classification of the find that has been to a possible misclassification of the fossil put in doubt. -
Spider Webs and Windows As Potentially Important Sources of Hummingbird Mortality
J. Field Ornithol., 68(1):98--101 SPIDER WEBS AND WINDOWS AS POTENTIAIJJY IMPORTANT SOURCES OF HUMMINGBIRD MORTALITY DEVON L. G•nqAM Departmentof Biology Universityof Miami PO. Box 249118 Coral Gables,Florida, 33124 USA Abstract.--Sourcesof mortality for adult hummingbirdsare varied, but most reports are of starvationand predation by vertebrates.This paper reportstwo potentiallyimportant sources of mortality for tropical hermit hummingbirds,entanglement in spiderwebs and impacts with windows.Three instancesof hermit hummingbirds(Phaethornis spp.) tangled in webs of the spider Nephila clavipesin Costa Rica are reported. The placement of webs of these spidersin sitesfavored by hermit hummingbirdssuggests that entanglementmay occur reg- ularly. Observationsat buildingsalso suggest that traplining hermit hummingbirdsmay be more likely to die from strikingwindows than other hummingbirds.Window kills may need to be consideredfor studiesof populationsof hummingbirdslocated near buildings. TELAS DE ARAI•A Y VENTANAS COMO FUENTES POTENCIALES DE MORTALIDAD PARA ZUMBADORES Sinopsis.--Lasfuentes de mortalidad para zumbadoresson variadas.Pero la mayoria de los informes se circunscribena inanicitn y a depredacitn pot parte de vertebrados.En este trabajo se informan dos importantesfuentes de mortalidad para zumbadorestropicales (Phaethornisspp.) como los impactoscontra ventanasy el enredarsecon tela de arafia. Se informan tres casosde zumbadoresenredados con tela de la arafia Nephila clavipesen Costa Rica. La construccitn de las telas de arafia en lugares -
Observebserve a D Dinosaurinosaur
OOBSERVEBSERVE A DDINOSAURINOSAUR How did ancient dinosaurs move and behave? To fi nd out, paleontologists look for clues in fossils, such as fossilized footprints, eggs, and even dung. They also observe and analyze the movement and behavior of living dinosaurs and other animals. These data help paleontologists interpret the fossil evidence. You can also observe living dinosaurs. Go outdoors to fi nd birds in their natural habitat. (Or you can use online bird videos, such as the Cornell Lab of Ornithology’s video gallery at www.birds.cornell.edu/AllAboutBirds/ BirdGuide/VideoGallery.html) 1. Record Your Observations What Evidence IndiCates In a notebook, fi rst record information That Birds Are Dinosaurs? about the environment: Over 125 years ago, paleontologists made a startling discovery. They • Date and Time recognized that the physical characteristics of modern birds and a • Location and Habitat species of small carnivorous dinosaur were alike. • Weather and temperature Take a look at the skeletons of roadrunner (a modern bird) and Coelophysis (an extinct dinosaur) to explore some of these shared Then observe a bird and record: characteristics. Check out the bones labeled on the roadrunner. • How does the bird move? Can you fi nd and label similar bones on the Coelophysis? • What does the bird eat? ROADRUNNER • Is the bird alone or in a group? S-shaped neck • How does the bird behave with Hole in hip socket members of its species? • How does the bird behave with members of other species? V-shaped furcula Pubis bone in hip (wishbone) points backwards Tips: • Weather conditions can affect how animals behave. -
Tinamiformes – Falconiformes
LIST OF THE 2,008 BIRD SPECIES (WITH SCIENTIFIC AND ENGLISH NAMES) KNOWN FROM THE A.O.U. CHECK-LIST AREA. Notes: "(A)" = accidental/casualin A.O.U. area; "(H)" -- recordedin A.O.U. area only from Hawaii; "(I)" = introducedinto A.O.U. area; "(N)" = has not bred in A.O.U. area but occursregularly as nonbreedingvisitor; "?" precedingname = extinct. TINAMIFORMES TINAMIDAE Tinamus major Great Tinamou. Nothocercusbonapartei Highland Tinamou. Crypturellus soui Little Tinamou. Crypturelluscinnamomeus Thicket Tinamou. Crypturellusboucardi Slaty-breastedTinamou. Crypturellus kerriae Choco Tinamou. GAVIIFORMES GAVIIDAE Gavia stellata Red-throated Loon. Gavia arctica Arctic Loon. Gavia pacifica Pacific Loon. Gavia immer Common Loon. Gavia adamsii Yellow-billed Loon. PODICIPEDIFORMES PODICIPEDIDAE Tachybaptusdominicus Least Grebe. Podilymbuspodiceps Pied-billed Grebe. ?Podilymbusgigas Atitlan Grebe. Podicepsauritus Horned Grebe. Podicepsgrisegena Red-neckedGrebe. Podicepsnigricollis Eared Grebe. Aechmophorusoccidentalis Western Grebe. Aechmophorusclarkii Clark's Grebe. PROCELLARIIFORMES DIOMEDEIDAE Thalassarchechlororhynchos Yellow-nosed Albatross. (A) Thalassarchecauta Shy Albatross.(A) Thalassarchemelanophris Black-browed Albatross. (A) Phoebetriapalpebrata Light-mantled Albatross. (A) Diomedea exulans WanderingAlbatross. (A) Phoebastriaimmutabilis Laysan Albatross. Phoebastrianigripes Black-lootedAlbatross. Phoebastriaalbatrus Short-tailedAlbatross. (N) PROCELLARIIDAE Fulmarus glacialis Northern Fulmar. Pterodroma neglecta KermadecPetrel. (A) Pterodroma -
Count Summary Report Printout Date: 11/11/2016
Count Summary Report Printout Date: 11/11/2016 Count Name: Monteverde, Costa Count Code: CRMO Count Date: 12/19/2001 Rica # of Party Hours: 257.00 Species reported on count date: 376 Organizations & Sponsors: Weather Temperature Minimum: 59.0 Celsius Maximum: 77.0 Celsius Wind Direction Northeast Wind Velocity Minimum: 0.00 Kilometers/hour Maximum: 6.00 Kilometers/hour Snow Depth Minimum: 0.00 Centimeters Maximum: 0.00 Centimeters Still Water Open Moving Water Open AM and PM Conditions Cloud Cover AM: Clear PM: Cloudy AM Rain None AM Snow None PM Rain Light PM Snow None Start & End Times Start time End time 12:00 AM 10:00 AM Effort Observers In Field Total Number: 70 Minimum Number of Parties (daylight): 19 Maximum Number of Parties (daylight): 24 At Feeders Total Number: 0 Party Hours and Distance (excludes viewing at feeders and nocturnal birding) By Hours Distance Units Foot 239.00 114.00 Kilometers Car 18.00 85.00 Kilometers Air All-Terrain Vehicle Page 1 of 12 pages Count Summary Report Printout Date: 11/11/2016 Bicycle Dog Sled Golfcart Horseback Motorized Boat Non-Motorized Boat Skis/Xc-Skis Snowmachine Snowshoe Wheelchair Other Time and Distance Hours Distance Units At Feeders 0.00 Nocturnal Birding 17.00 26.00 Miles Total Party 257.00 199.00 Kilometers Checklist Species Number Number/Party Hrs. Flags Editorial Codes Highland Tinamou 3 0.0117 Great Tinamou 2 0.0078 Gray-headed Chachalaca 33 0.1284 Crested Guan 20 0.0778 Black Guan 18 0.0700 Black-breasted Wood-Quail 56 0.2179 Least Grebe 5 0.0195 Anhinga 1 0.0039 Fasciated Tiger-Heron -
Hummingbird Haven Backyard Habitat for Wildlife
U.S. Fish & Wildlife Service Hummingbird Haven Backyard Habitat for Wildlife From late March through mid November, if you and then spending their winters in Mexico. look carefully, you may find a small flying Beating their wings 2.7 million times, the jewel in your backyard. The ruby-throated ruby-throated hummingbird flies 500 miles hummingbird may be seen zipping by your nonstop across the Gulf of Mexico during porch or flitting about your flower migration. This trip averages 18-20 hours garden. Inquisitive by nature, these but with a strong tail wind, the flight takes tiny birds will fly close to investigate ten hours. To survive, migrating hummers your colorful blouse or red baseball cap. must store fat and fuel up before and right The hummingbird, like many species of after crossing the Gulf—there are no wildlife is plagued by loss of habitat. sources of nectar over the ocean! However, by providing suitable backyard habitat you can help this flying jewel of a bird. Hummingbird Flowers Flowers Height Color Bloom time Hummingbird Habitat A successful backyard haven for hummingbirds contains a Herbaceous Plants variety of flowering plants including tall and medium trees, Bee Balm 2-4' W, P, R, L summer shrubs, vines, perennial and annual flowers. Flowering plants Blazing Star 2-6' L summer & fall provide hummers with nectar for energy and insects for Cardinal Flower 2-5' R summer protein. Trees and shrubs provide vertical structure for nesting, perching and shelter. No matter what size garden, try Columbine 1-4' all spring & summer to select a variety of plants to ensure flowering from spring Coral Bells 6-12" W, P, R spring through fall. -
Hummingbirds for Kids
Hummingbird Facts & Activity for Kids Hummingbird Facts: Georgia is home to 11 hummingbird species during the year: 1. ruby-throated 2. black-chinned 3. rufous 4. calliope 5. magnificent 6. Allen's 7. Anna's 8. broad-billed 9. green violet-ear 10. green-breasted mango 11. broad-tailed The ruby-throated hummingbird is the only species of hummingbird known to nest to Georgia. These birds weigh around 3 grams-- as little as a first-class letter. The female builds the walnut-sized nest without any help from her mate, a process that can take up to 12 days. The female then lays two eggs, each about the size of a black-eyed pea. In Georgia, female ruby-throated hummers produce up to two broods per year. Nests are typically built on a small branch that is parallel to or dips downward. The birds sometimes rebuild the nest they used the previous year. Keep at least one feeder up throughout the year. You cannot keep hummingbirds from migration by leaving feeders up during the fall and winter seasons. Hummingbirds migrate in response to a decline in day length, not food availability. Most of the rare hummingbirds found in Georgia are seen during the winter. Homemade Hummingbird Feeders: You can use materials from around your home to make a feeder. Here is a list of what you may use: • Small jelly jar • Salt shaker • Wire or coat hanger for hanging • Red pipe cleaners Homemade Hummingbird Food: • You will need--- 1 part sugar to 4 parts water • Boil the water for 2–3 minutes before adding sugar. -
Ratite Molecular Evolution, Phylogeny and Biogeography Inferred from Complete Mitochondrial Genomes
RATITE MOLECULAR EVOLUTION, PHYLOGENY AND BIOGEOGRAPHY INFERRED FROM COMPLETE MITOCHONDRIAL GENOMES by Oliver Haddrath A thesis submitted in confonnity with the requirements for the Degree of Masters of Science Graduate Department of Zoology University of Toronto O Copyright by Oliver Haddrath 2000 National Library Biblioth&que nationale 191 .,,da du Canada uisitions and Acquisitions et Services services bibliographiques 395 Welington Street 395. rue WdKngton Ottawa ON KIA ON4 Otîâwâ ON K1A ûN4 Canada Canada The author has granted a non- L'auteur a accordé une iicence non exclusive licence allowing the exclusive permettant A la National Library of Canada to Bihliotheque nationale du Canada de reproduce, loan, distribute or sell reproduire, @ter, distribuer ou copies of diis thesis in microfonn, vendre des copies de cette thèse sous paper or electronic formats. la forme de microfiche/fïîm, de reproduction sur papier ou sur format 61ectronique. The author retains ownership of the L'auteur conserve la propriété du copyright in this thesis. Neither the droit d'auteur qui protège cette tbése. thesis nor substantial exûacts fiom it Ni la thèse ni des extraits substantiels may be priated or otherwise de celle-ci ne doivent être imprimés reproduced without the author's ou autrement reproduits sans son permission. autorisation. Abstract Ratite Molecular Evolution, Phylogeny and Biogeography Inferred fiom Complete Mitochoncîrial Genomes. Masters of Science. 2000. Oliver Haddrath Department of Zoology, University of Toronto. The relationships within the ratite birds and their biogeographic history has been debated for over a century. While the monophyly of the ratites has been established, consensus on the branching pattern within the ratite tree has not yet been reached. -
Ecology, Morphology, and Behavior in the New World Wood Warblers
Ecology, Morphology, and Behavior in the New World Wood Warblers A dissertation presented to the faculty of the College of Arts and Sciences of Ohio University In partial fulfillment of the requirements for the degree Doctor of Philosophy Brandan L. Gray August 2019 © 2019 Brandan L. Gray. All Rights Reserved. 2 This dissertation titled Ecology, Morphology, and Behavior in the New World Wood Warblers by BRANDAN L. GRAY has been approved for the Department of Biological Sciences and the College of Arts and Sciences by Donald B. Miles Professor of Biological Sciences Florenz Plassmann Dean, College of Arts and Sciences 3 ABSTRACT GRAY, BRANDAN L., Ph.D., August 2019, Biological Sciences Ecology, Morphology, and Behavior in the New World Wood Warblers Director of Dissertation: Donald B. Miles In a rapidly changing world, species are faced with habitat alteration, changing climate and weather patterns, changing community interactions, novel resources, novel dangers, and a host of other natural and anthropogenic challenges. Conservationists endeavor to understand how changing ecology will impact local populations and local communities so efforts and funds can be allocated to those taxa/ecosystems exhibiting the greatest need. Ecological morphological and functional morphological research form the foundation of our understanding of selection-driven morphological evolution. Studies which identify and describe ecomorphological or functional morphological relationships will improve our fundamental understanding of how taxa respond to ecological selective pressures and will improve our ability to identify and conserve those aspects of nature unable to cope with rapid change. The New World wood warblers (family Parulidae) exhibit extensive taxonomic, behavioral, ecological, and morphological variation.