Bird Beaks Bird Feet You Can Tell a Lot About What a the Feet of a Bird Can Tell Us Bird Eats by Its Beak Type! About Where the Bird Lives And

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Bird Beaks Bird Feet You can tell a lot about what a The feet of a bird can tell us bird eats by its beak type! about where the bird lives and How many types can you find? what it eats! How many types can you find? Junior Bird List For the Laguna de Santa Rosa List of most common birds found on City reclamation ponds, marshes and farms EAGLES, KITES, FALCONS & HAWKS WOODPECKERS Aerial Marsh Osprey Northern Flicker Oak Woodland Pond White-tailed Kite Nuttall’s Woodpecker Streamside Grassland SONGBIRDS Red-shouldered Hawk Summer Winter Black Phoebe Red-tailed Hawk Fall Permanent Scrub Jay American Kestrel American Crow GROUSE, TURKEY & QUAIL GREBES Violet-green Swallow California Quail Pied-billed Grebe Cliff Swallow RAILS & CRANES PELICANS & CORMORANTS Marsh Wren American Coot American White Pelican SHOREBIRDS & GULLS Western Bluebird Double-crested Cormorant Killdeer American Robin HERONS, EGRETS & VULTURES Black-necked Stilt European Starling Great Blue Heron American Avocet Yellow-rumped Warbler Great Egret Mew Gull California Towhee Snowy Egret Ring-billed Gull Golden-crowned Sparrow Turkey Vulture DOVES White-crowned Sparrow SWANS, GEESE & DUCKS Rock Dove Red-winged Blackbird Canada Goose Mourning Dove Western Meadowlark Mallard SWIFTS & HUMMINGBIRDS House Finch Northern Shoveler Anna’s Hummingbird Goldfinch Bufflehead KINGFISHERS Northern Mockingbird Ruddy Duck Belted Kingfisher Common Yellowthroat .

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Psittacine Beak and Feather Disease (Or Psittacine Circovirus, PCV)
Psittacine beak and feather disease (or psittacine circovirus, PCV) Published by The recent diagnosis of psittacine beak and feather disease in wild Biosecurity Unit parrots is a cause of concern to the Department of Conservation. It Department of Conservation was diagnosed in a wild eastern rosella in the Wellington region in PO Box 12–416 Wellington, New Zealand August 2003. This disease is caused by a highly infectious virus and April 2004 affects the skin, feathers and immune system of parrots. There is po- tential for the disease to be transmitted to other wild parrots, in par- ticular New Zealand’s native species, such as the endangered kakapo and kaka. The potential impact of this disease on these spe- cies is unknown as it has affected parrot species in other countries in unpredictable patterns. However, the disease, also known as psit- tacine circovirus (PCV), could decimate the already depleted populations of our treasured native parrots and it therefore repre- sents a significant threat to biodiversity. What is psittacine beak and What happens if birds are feather disease? infected with this disease? Psittacine beak and feather disease Three forms of the disease exist: per- (also known as psittacine circovirus, acute (very sudden onset), acute (sud- PCV) is a highly infectious viral dis- den onset) and chronic (long term). ease of parrots that can cause high ju- The peracute form affects neonatal venile mortality, or long-term immu- (baby) parrots and causes septicae- Parrot infected with psittacine nological suppression, feather abnor- mia, pneumonia, enteritis (inflam- beak and feather disease. Photograph: Mary Wagner malities and (in cockatoos) beak rot.
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Beak and Feather Disease Viru
Fact sheet Beak and feather disease virus (BFDV) is the causative agent of psittacine beak and feather disease (PBFD), an endemic disease in Australia’s wild parrot populations. Descriptions of parrots with feather loss consistent with the disease date back to the late 1800s (Ashby 1907). The virus is believed to have originated in Australia sometime following the separation of the continent from Gondwanaland, with spread to other parts of the world with modern movement of parrots as pet and aviary species . It has the potential to impact on several endangered Australian and non-Australian parrot populations and is listed as a key threatening process by the Australian government. Of late, the virus also has been identified in various non-psittacine species . Beak and feather disease virus is a 14 to 16 nm non-enveloped icosahedral DNA virus belonging to the family Circoviridae. Formerly, it was believed that the circoviruses recovered from a diverse range of psittacines were all antigenically similar. Doubt was cast on this theory when a virus that appeared to be serologically and genetically different was isolated from cockatiels (Nymphicus hollandicus) (Shearer et al. 2008). More recent research appears to indicate that psittacine circoviruses can be divided into two species and multiple viral strains. Based on work by Varsani et al. (2011), BFDV contains 14 strains, while budgerigar circovirus (BCV), a newly defined species to date only found in budgerigars (Melopsittacus undulates), contains three strains. However, it is likely that this number will continue to increase as shown by the discovery of two new distinct BFDV lineages in orange-bellied parrots (Neophema chrysogaster) (Peters et al.
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List of Shorebird Profiles
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Seabird Protection & Avoidance Tips
Seabird Protection & Avoidance Tips Seabirds live in a variety of habitats in and around shallow water and coastal environments. They represent a vital part of marine ecology and are protected under the Migratory Bird Treaty Act. In fact, most of the 312 species of seabirds you may encounter while fishing are likely to be protected by law, with some classified as endangered or threatened under the Endangered Species Act. NOAA Depending on the geographic region, fishermen in the U.S. can FISHERIES observe species of Albatross, Cormorants, Gannet, Loons, Pelicans, Puffins, Sea Gulls, Storm-Petrels, Shearwaters, and SERVICE Terns, among others. Office of Sustainable Fisheries Be Aware of Seabird Behavior Seabirds feed on smaller fish that most anglers use for bait, so they typically won’t challenge a fisherman for his catch, however, the seabird’s hunting methods still put them in danger of getting hooked or entangled in a fisherman’s line. Many seabirds feed on krill, fish, squid or other prey items at the ocean's surface, while some, such as Cormorants, are known to dive to depths of more than 100 ft below the waves to catch a fish. In another technique, seabirds in flight will “plunge dive” into the water in pursuit of a fast-moving fish. Brown Pelicans, for example, can make vertical dives from more than 70 feet above the water when chasing their prey. Young seabirds, especially young pelicans, are particularly susceptible to being ensnared by fishing line. What If I Accidentally Hook a Seabird? HOW CAN I HELP SEABIRDS? In the unfortunate event of a hooked seabird, don't cut or break the line.
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Beak Evolution in Some Dinosaurs Likely Associated with Diet, Not Flight, Study Shows 2 December 2013
Beak evolution in some dinosaurs likely associated with diet, not flight, study shows 2 December 2013 played an important role in stabilizing the skeletal structure during feeding, making the skull less susceptible to bending and deformation. Lead author Dr Stephan Lautenschlager of Bristol's School of Earth Sciences said: "It has classically been assumed that beaks evolved to replace teeth and thus save weight, as a requirement for the evolution of flight. Our results, however, indicate that keratin beaks were in fact beneficial to enhance the stability of the skull during biting and feeding." Credit: Copyright: Dr. Stephan Lautenschlager Beaks are a typical hallmark of modern birds and can be found in a huge variety of forms and shapes. However, it is less well known that keratin- covered beaks had already evolved in different groups of dinosaurs during the Cretaceous Period. Employing high-resolution X-ray computed tomography (CT scanning) and computer Credit: Copyright: Dr. Stephan Lautenschlager simulations, Dr Stephan Lautenschlager and Dr Emily Rayfield of the University of Bristol with Dr Perle Altangerel (National University of Ulaanbaatar) and Professor Lawrence Witmer Co-author Dr Emily Rayfield, Reader of (Ohio University) used digital models to take a Palaeobiology at Bristol said: "Using Finite Element closer look at these dinosaur beaks. Analysis, a computer modelling technique routinely used in engineering, we were able to deduce very The focus of the study was the skull of accurately how bite and muscle forces affected the Erlikosaurus andrewsi, a 3-4m (10-13ft) large skull of Erlikosaurus during the feeding process. herbivorous dinosaur called a therizinosaur, which This further allowed us to identify the importance of lived more than 90 million years ago during the soft-tissue structures, such as the keratinous beak, Cretaceous Period in what is now Mongolia, and which are normally not preserved in fossils." which shows evidence that part of its snout was covered by a keratinous beak.
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Our Museum Dinosaurs
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Hummingbirds in Your Backyard
Hummingbirds in Your Backyard It is a delight to observe hummingbirds feeding from garden flowers. With striking colors, amazing speed and the ability to hover in mid- air, these very active birds are always a sight to see. General Information about Hummingbirds Hummingbirds, named for the sound their wings make in flight, are very interesting creatures. Like insects, they buzz around at great speeds, darting from flower to flower to drink the sugar- rich nectar. Specialized for feeding from tube- If you see a hummingbird in Florida, it is likely the shaped flowers, hummingbirds also play a great Ruby-throated Hummingbird (Archilochus colubris). ecological role in the pollination of many spe- Notice the ruby-colored throat of the male (above). cies of plants. In West-Central Florida, it is the Ruby-throated Hummingbird (Archilochus colu- bird’s throat feathers. Females and juveniles bris) that makes an occasional appearance. lack this color, but males and females share the same shining emerald green plumage on their The Ruby-throated Hummingbird heads and backs. This species of hummingbird is found through- Attracting Hummingbirds to Your Garden out the Eastern United States and it has the largest breeding range of any hummingbird. In In more northern and western states, humming- West-Central Florida, this species is an occa- birds can be seen by the hundreds at special- sional year-round resident, but is most often ized hummingbird feeders. Floridians are seen during migrations in the spring and fall. known to bring these feeders home in hopes of Thousands of Ruby-throated Hummingbirds mi- seeing the same spectacle in their own yard.
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The Hummingbird As Warrior: Evolution of a Fierce and Furious Beak - the New York Times 2/11/19, 1019 AM
The Hummingbird as Warrior: Evolution of a Fierce and Furious Beak - The New York Times 2/11/19, 1019 AM SCIENCETAKE The Hummingbird as Warrior: Evolution of a Fierce and Furious Beak Winsomely captured in poems and song, the birds are yielding new secrets about their astounding beaks and penchant for violence. By James Gorman Feb. 5, 2019 If you want to know what makes hummingbirds tick, it’s best to avoid most poetry about them. Bird-beam of the summer day, — Whither on your sunny way? Whither? Probably off to have a bloodcurdling fight, that’s whither. John Vance Cheney wrote that verse, but let’s not point fingers. He has plenty of poetic company, all seduced by the color, beauty and teeny tininess of the hummingbird but failed to notice the ferocity burning in its rapidly beating heart. https://www.nytimes.com/2019/02/05/science/hummingbirds-science-t…03edit_sc_20190205&ref=headline&te=1&login=email&auth=login-email Page 1 of 12 The Hummingbird as Warrior: Evolution of a Fierce and Furious Beak - The New York Times 2/11/19, 1019 AM The Aztecs weren’t fooled. Their god of war, Huitzilopochtli, was a hummingbird. The Aztecs loved war, and they loved the beauty of the birds as well. It seems they didn’t find any contradiction in the marriage of beauty and bloodthirsty aggression. Scientists understood that aggression was a deep and pervasive part of hummingbird life. But they, too, have had their blind spots. The seemingly perfect match of nectar-bearing flowers to slender nectar-sipping beaks clearly showed that hummingbirds were shaped by co-evolution.
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High Concentrations of European Storm Petrel (Hydrobates Pelagicus Ssp
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