Breeding Birds of the Texas Coast
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Studies of the Foods and Feeding Ecology of Wading Birds
STUDIES OF THE FOODS AND FEEDING ECOLOGY OF WADING BIRDS Thesis submitted in part fulfilment of the requirements for the degree of Doctor of Philosophy of the Council for National Academic Awards .. by Malcolm E. Greenhalgh, B. A. Department of Biology Liverpool Polytechnic October 1975 s ABSTRACT In this thesis are described the populations of waders (Aves: Charadrii) occurring on the Ribble Estuary, Lancashire, special reference being made to the eleven species comprising the bulk of the shore wader population. The daily routine of these birds is described including the time spent in feeding. The feeding areas are described together with the foods taken from gut and pellet analysis and direct observation. The distributions of invertebrates, and especially those of major importance as wader food, are described as well as the factors affecting these distributions. Variations in density of prey in relation to O. D., general geography of the estuary, and time of year are included. Depth distribution and variations in prey size are outlined for the main species. Food intake was studied in the eight main waders. Daily intake through the year is described. in relation to energy requirements. Variations of feeding rates with several factors are included. All data are combined to enable calculation of the total biomasses of the main prey taken by waders in the course of a year. These are compared with total minimum annual production of the prey. Future work, including a computer study based on these and extra data, is outlined. Frontispiece a. The author counting a flock of 45,000 Knot 25 August, 1972 b. -
Bird Checklist
GEESE, SWANS & DUCKS __ Double-crested Cormorant __ Peregrine Falcon __ Laughing Gull __ Franklin’s Gull __ Blk.-bellied Whistling-Duck ANHINGAS RAILS, GALLINULES & __ Ring-billed Gull __ Fulvous Whistling-Duck __ Anhinga COOTS __ Herring Gull __ Grtr. White-fronted Goose __ King Rail __ Least Tern __ Snow Goose PELICANS __ Virginia Rail __ Caspian Tern __ Ross’s Goose __ American White Pelican __ Sora __ Black Tern __ Cackling Goose __ Purple Gallinule __ Forster’s Tern __ Canada Goose BITTERNS & HERONS __ Common Gallinule __ Tundra Swan __ American Bittern __ American Coot PIGEONS & DOVES __ Wood Duck __ Least Bittern __ Rock Pigeon __ Gadwall __ Great Blue Heron CRANES __ Eurasian Collared-Dove __ American Wigeon __ Great Egret __ Sandhill Crane __ White-winged Dove __ American Black Duck __ Snowy Egret __ Mourning Dove BIRD CHECKLIST __ Mallard __ Little Blue Heron PLOVERS __ Blue-winged Teal __ Tricolored Heron __ Black-bellied Plover CUCKOOS & ANIS __ Northern Shoveler __ Cattle Egret __ American Golden-Plover __ Yellow-billed Cuckoo __ Northern Pintail __ Green Heron __ Semipalmated Plover __ Black-billed Cuckoo ara Wildlife is a great place to see the __ Green-winged Teal __ Black-crowned Night-Heron __ Killdeer beautiful and varied bird life of the __ Canvasback __ Yell.-crowned Night-Heron BARN OWLS __ Redhead STILTS & AVOCETS __ Barn Owl Mississippi River valley. Its bottomland __ Ring-necked Duck IBISES & SPOONBILLS __ Black-necked Stilt Tforests, wetlands, river shoreline, sloughs and __ Greater Scaup __ White Ibis __ American Avocet TYPICAL OWLS other habitats harbor Wood Storks, Roseate __ Lesser Scaup __ Glossy Ibis __ Eastern Screech-Owl __ Long-tailed Duck __ White-faced Ibis SANDPIPERS __ Great Horned Owl Spoonbills, Bald Eagles, Prothonotary __ Bufflehead __ Roseate Spoonbill __ Spotted Sandpiper __ Barred Owl Warblers, Painted Buntings and many other __ Common Goldeneye __ Solitary Sandpiper __ Short-eared Owl __ Hooded Merganser VULTURES __ Greater Yellowlegs species. -
<I>Actitis Hypoleucos</I>
Partial primary moult in first-spring/summer Common Sandpipers Actitis hypoleucos M. NICOLL 1 & P. KEMP 2 •c/o DundeeMuseum, Dundee, Tayside, UK 243 LochinverCrescent, Dundee, Tayside, UK Citation: Nicoll, M. & Kemp, P. 1983. Partial primary moult in first-spring/summer Common Sandpipers Actitis hypoleucos. Wader Study Group Bull. 37: 37-38. This note is intended to draw the attention of wader catch- and the old inner feathersare often retained (Pearson 1974). ers to the needfor carefulexamination of the primariesof Similarly, in Zimbabwe, first-year Common Sandpipers CommonSandpipers Actiris hypoleucos,and other waders, replacethe outerfive to sevenprimaries between December for partial primarywing moult. This is thoughtto be a diag- andApril (Tree 1974). It thusseems normal for first-spring/ nosticfeature of wadersin their first spring and summer summerCommon Sandpipers wintering in eastand southern (Tree 1974). Africa to show a contrast between new outer and old inner While membersof the Tay Ringing Group were mist- primaries.There is no informationfor birdswintering further nettingin Angus,Scotland, during early May 1980,a Com- north.However, there may be differencesin moult strategy mon Sandpiperdied accidentally.This bird was examined betweenwintering areas,since 3 of 23 juvenile Common and measured, noted as an adult, and then stored frozen un- Sandpiperscaught during autumn in Morocco had well- til it was skinned,'sexed', andthe gut contentsremoved for advancedprimary moult (Pienkowski et al. 1976). These analysis.Only duringskinning did we noticethat the outer birdswere moultingnormally, and so may have completed primarieswere fresh and unworn in comparisonto the faded a full primary moult during their first winter (M.W. Pien- and abradedinner primaries.The moult on both wingswas kowski, pers.comm.). -
Migration Route for Greater and Lesser Sand Plovers Spending the Non-Breeding Season in Kenya
Biodiversity Observations http://bo.adu.org.za An electronic journal published by the Animal Demography Unit at the University of Cape Town The scope of Biodiversity Observations consists of papers describing observations about biodiversity in general, including animals, plants, algae and fungi. This includes observations of behaviour, breeding and flowering patterns, distributions and range extensions, foraging, food, movement, measurements, habitat and colouration/plumage variations. Biotic interactions such as pollination, fruit dispersal, herbivory and predation fall within the scope, as well as the use of indigenous and exotic species by humans. Observations of naturalised plants and animals will also be considered. Biodiversity Observations will also publish a variety of other interesting or relevant biodiversity material: reports of projects and conferences, annotated checklists for a site or region, specialist bibliographies, book reviews and any other appropriate material. Further details and guidelines to authors are on this website. Lead Editor: Arnold van der Westhuizen – Paper Editor: Les G Underhill CLUES TOWARDS THE MIGRATION ROUTE FOR GREATER AND LESSER SAND PLOVERS SPENDING THE NON-BREEDING SEASON IN KENYA Colin H.W. Jackson Recommended citation format: Jackson CHW 2016. Clues towards the migration route for Greater and Lesser Sand Plovers spending the non-breeding season in Kenya. Biodiversity Observations 7.36: 1–8. URL: http://bo.adu.org.za/content.php?id=229 Published online: 5 July 2016 – ISSN 2219-0341 – Biodiversity Observations 7.36: 1–8 1 MIGRATION breeds in north-western China (Hirschfield et al. 2000, Delany et al. 2009). CLUES TOWARDS THE MIGRATION ROUTE FOR In both species the adults return to their breeding grounds annually. -
Roseate Spoonbill Breeding in Camden County: a First State Nesting Record for Georgia
vol. 76 • 3 – 4 THE ORIOLE 65 ROSEATE SPOONBILL BREEDING IN CAMDEN COUNTY: A FIRST STATE NESTING RECORD FOR GEORGIA Timothy Keyes One Conservation Way Brunswick, GA 31520 [email protected] Chris Depkin One Conservation Way Brunswick, GA 31520 [email protected] Jessica Aldridge 6222 Charlie Smith Sr. Hwy St. Marys, GA 31558 [email protected] Introduction We report the northernmost breeding record of Roseate Spoonbill (Platalea ajaja) on the Atlantic Coast of the U.S. Nesting activity has been suspected in Georgia for at least 5 years, but was first confirmed in June 2011 at a large wading bird colony in St. Marys, Camden County, Georgia. Prior to this record, the furthest northern breeding record for Roseate Spoonbill was in St. Augustine, St. John’s County, Florida, approximately 100 km to the south. This record for Georgia continues a trend of northward expansion of Roseate Spoonbill post-breeding dispersal and breeding ranges. Prior to the plume-hunting era of the mid to late 1800s, the eastern population of Roseate Spoonbill was more abundant and widespread than it is today (Dumas 2000), breeding across much of south Florida. Direct persecution and collateral disturbance by egret plume hunters led to a significant range contraction between 1850 and the 1890s (Allen 1942), limiting the eastern population of Roseate Spoonbills to a few sites in Florida Bay by the 1940s. A low of 15 nesting pairs were documented in 1936 (Powell et al. 1989). By the late 1960s, Roseate Spoonbills began to expand out of Florida Bay, slowly reclaiming some of the territory they had lost. -
Mapping Farmland Wader Distributions and Population Change to Identify Wader Priority Areas for Conservation and Management Action
Mapping farmland wader distributions and population change to identify wader priority areas for conservation and management action Scott Newey1*, Debbie Fielding1, and Mark Wilson2 1. The James Hutton Institute, Aberdeen, AB15 8QH 2. The British Trust for Ornithology Scotland, Stirling, FK9 4NF * [email protected] Introduction Many birds have declined across Scotland and the UK as a whole (Balmer et al. 2013, Eaton et al. 2015, Foster et al. 2013, Harris et al. 2017). These include five species of farmland wader; oystercatcher, lapwing, curlew, redshank and snipe. All of these have all been listed as either red or amber species on the UK list of birds of conservation concern (Harris et al. 2017, Eaton et al. 2015). Between 1995 and 2016 both lapwing and curlew declined by more than 40% in the UK (Harris et al. 2017). The UK harbours an estimated 19-27% of the curlew’s global breeding population, and the curlew is arguably the most pressing bird conservation challenge in the UK (Brown et al. 2015). However, the causes of wader declines likely include habitat loss, alteration and homogenisation (associated strongly with agricultural intensification), and predation by generalist predators (Brown et al. 2015, van der Wal & Palmer 2008, Ainsworth et al. 2016). There has been a concerted effort to reverse wader declines through habitat management, wader sensitive farming practices and predator control, all of which are likely to benefit waders at the local scale. However, the extent and severity of wader population declines means that large scale, landscape level, collaborative actions are needed if these trends are to be halted or reversed across much of these species’ current (and former) ranges. -
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Establishing The Link: The ROK & USA Alaskan Bar-tailed Godwit, Geum Estuary, ROK, April 2006, Jan van de Kam / Birds Korea Nial Moores, Birds Korea, November 19th 2012 An introduction prepared for the US Embassy, Seoul, and USA-based conservation organisations Number of Shared Species l 149+ species out of total 189 listed in USA-Japan migratory bird protection convention * (1972) recorded in the Republic of Korea (ROK) l 119 of these 149 are regularly-occurring in the ROK l Probably ~19 species actually migrate regularly between ROK and Alaska l These 19 species provide the best focus for discussion and future collaborative conservation work * CONVENTION BETWEEN THE GOVERNMENT OF JAPAN AND THE GOVERNMENT OF THE UNITED STATES OF AMERICA FOR THE PROTECTION OF MIGRATORY BIRDS AND BIRDS IN DANGER OF EXTINCTION, AND THEIR ENVIRONMENT (1972) East Asian-Australasian Flyway: Bird Migration Linking Nations Alaska: supports breeding loons, ducks and shorebirds Heart of the Flyway: the Yellow Sea. Yellow Sea Supports staging shorebirds during migration and wintering loons and Dunlin Australia and New Zealand: during boreal winter support many shorebird species Figure used by Birds Korea with permission; from van de Kam et al. (2008) USA-ROK Shared Bird Species Some freshwater ducks –however, majority of c.19 main shared migratory bird species are Seabirds and Shorebirds In ROK ecologically dependent on: 1.Inshore and Marine waters 2.Intertidal wetlands Inshore and Marine Species GInavciildaeude and Alcidae -species include: Red-throated Loon Gavia stellata YRelledow-btillhedroa Loonted G avLoonia ada mGsaii via Stellata Yellow-billed Loon Gavia adamsii Yellow-billed Loon, Gangwon, T. -
Infection, Genetics and Evolution 53 (2017) 135–145
Infection, Genetics and Evolution 53 (2017) 135–145 Contents lists available at ScienceDirect Infection, Genetics and Evolution journal homepage: www.elsevier.com/locate/meegid Research paper Purifying selection and concerted evolution of RNA-sensing toll-like receptors in migratory waders Nynke Raven a, Simeon Lisovski a, Marcel Klaassen a,NathanLob,ThomasMadsena, Simon Y.W. Ho b, Beata Ujvari a,⁎ a Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC 3216, Australia b School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia article info abstract Article history: Migratory birds encounter a broad range of pathogens during their journeys, making them ideal models for study- Received 10 December 2016 ingimmunegeneevolution.Despitethepotentialvalueof these species to immunoecology and disease epidemi- Received in revised form 15 May 2017 ology, previous studies have typically focused on their adaptive immune gene repertoires. In this study, we Accepted 17 May 2017 examined the evolution of innate immune genes in three long-distance migratory waders (order Charadriiformes). Available online 18 May 2017 We analysed two parts of the extracellular domains of two Toll-like receptors (TLR3 and TLR7) involved in virus recognition in the Sanderling (Calidris alba), Red-necked Stint (Calidris ruficollis), and Ruddy Turnstone (Arenaria Keywords: Migratory birds interpres). Our analysis was extended to 50 avian species for which whole-genome sequences were available, in- Toll-like receptor cluding two additional waders. We found that the inferred relationships among avian TLR3 and TLR7 do not match Concerted evolution the whole-genome phylogeny of birds. Further analyses showed that although both loci are predominantly under Avian influenza virus purifying selection, the evolution of the extracellular domain of avian TLR3 has also been driven by episodic diver- Purifying selection sifying selection. -
Conservation Advice Charadrius Mongolus Lesser Sand Plover
THREATENED SPECIES SCIENTIFIC COMMITTEE Established under the Environment Protection and Biodiversity Conservation Act 1999 The Minister approved this conservation advice and included this species in the Endangered category, effective from 5 May 2016 Conservation Advice Charadrius mongolus Lesser sand plover Taxonomy Conventionally accepted as Charadrius mongolus Pallas, 1776. Charadriidae. Other common names include Mongolian plover, dotterel, sand-plover or sand-dotterel; lesser dotterel or sand-dotterel; short-nosed sand plover (Marchant & Higgins 1993). Two subspecies occur in Australia, Charadrius mongolus mongolus lesser sand plover (Mongolian) and C. m. stegmanni lesser sand plover (Kamchatkan). Taxonomic uniqueness: medium (11 genera/family, 35 species/genus, 5 subspecies/species; Garnett et al., 2011). Summary of assessment Conservation status Endangered: Criterion 1 A2 (a) The highest category for which Charadrius mongolus is eligible to be listed is Endangered. Charadrius mongolus has been found to be eligible for listing under the following listing categories: Criterion 1: A2 (a): Endangered Criterion 2: Not eligible Criterion 3: Not eligible Criterion 4: Not eligible Criterion 5: Not eligible Species can be listed as threatened under state and territory legislation. For information on the listing status of this species under relevant state or territory legislation, see http://www.environment.gov.au/cgi-bin/sprat/public/sprat.pl Reason for conservation assessment by the Threatened Species Scientific Committee This advice follows assessment of new information provided to the Committee to list Charadrius mongolus. Public Consultation Notice of the proposed amendment and a consultation document was made available for public comment for 47 business days between 1 October and 4 December 2015. -
Imperiled Coastal Birds of Florida and the State Laws That Protect Them
Reddish Egret Roseate Spoonbill Threatened (S) Threatened (S) Imperiled Coastal The rarest heron in North Using spatulala-shaped Birds of Florida America, Reddish Egrets bills to feel prey in shallow are strictly coastal. They ponds, streams, or coastal and the chase small fish on open waters, Roseate Spoonbills State Laws that flats. They nest in small nest in trees along the numbers on estuary coast and inland. Having Protect Them islands, usually in colonies barely recovered from with other nesting wading hunting eradication, these birds. This mid-sized heron birds now face extirpation is mostly gray with rust- from climate change and colored head, though some sea-level rise. birds are solid white. Wood Stork Florida Sandhill Threatened (F) Florida Statutes and Rules Crane This large wading bird Threatened (S) is the only stork in the 68A-27.003 Designation and management of the state- This crane subspecies is Americas. Breeding areas listed species and coordination with federal government for resident year-round in have shifted from south federally-listed species Florida, and defends a Florida and the Everglades nesting territory that is northward. Wood Storks 68A-19.005 General Regulations relating to state- must have abundant prey adjacent to open upland designated Critical Wildlife Areas foraging habitat. Nesting concentrated in shallow in shallow ponds, adults wetlands in order to feed 68A-4.001 Controls harvest of wildlife only under permitted defend their eggs or chicks their young. Prey items from predators including include -
A WADER MIGRATION at TLELL, QUEEN CHARLOTTE ISLANDS, BRITISH COLUMBIA with THREE ILLUSTRATIONS by J
230 Vol. XXXVIII A WADER MIGRATION AT TLELL, QUEEN CHARLOTTE ISLANDS, BRITISH COLUMBIA WITH THREE ILLUSTRATIONS By J. A. MUNRO While at Tlell, on the east coast of Graham Island, during the period April 29 to May 30, 1935, I had an opportunity to conduct daily observations on a wader migration. The flight probably had been under way for some days prior to my arrival, and it reached the peak shortly afterward. It terminated so far as most species were concerned on May 11, after which only Sanderlings (Crocettiu a&z) were abundant. The chief feeding ground for waders was an expanse of boulder-strewn sea- bottom interspersed with areas of clear sand or of shingle, part of which was always available except at extreme high tide when the reef was completely submerged. Some of these boulders were encrusted with barnacles, others with gastropods, chiefly Littorina scutzdata. Limpets clung to their sides and the spaces between harbored various other species of molluscs. The overturning of a stone usually dis- lodged little crabs, isopods or other small animals, and a high-water mark deposit of drifted eel-grass held still others including amphipods in abundance-in short, it was a rich feeding ground not only for waders but also for gulls, bald eagles, crows and ravens. Here on the evening of April 29, with all save several small parts of the reef covered by the rising tide, a large company of waders, chiefly Black Turnstones (Arena& mdunocepkah) , but including also Aleutian Sandpipers (Arquatella ptilocds cmesi), Western Sandpipers (Ereunetes mawi), Sanderlings, Dowitchers (Limnodrom&cs griseus) and Red-backed Sandpipers (Pelidnu dpina sakkuhz) was assembled. -
British Birds |
VOL. LU JULY No. 7 1959 BRITISH BIRDS WADER MIGRATION IN NORTH AMERICA AND ITS RELATION TO TRANSATLANTIC CROSSINGS By I. C. T. NISBET IT IS NOW generally accepted that the American waders which occur each autumn in western Europe have crossed the Atlantic unaided, in many (if not most) cases without stopping on the way. Yet we are far from being able to answer all the questions which are posed by these remarkable long-distance flights. Why, for example, do some species cross the Atlantic much more frequently than others? Why are a few birds recorded each year, and not many more, or many less? What factors determine the dates on which they cross? Why are most of the occurrences in the autumn? Why, despite the great advantage given to them by the prevail ing winds, are American waders only a little more numerous in Europe than European waders in North America? To dismiss the birds as "accidental vagrants", or to relate their occurrence to weather patterns, as have been attempted in the past, may answer some of these questions, but render the others still more acute. One fruitful approach to these problems is to compare the frequency of the various species in Europe with their abundance, migratory behaviour and ecology in North America. If the likelihood of occurrence in Europe should prove to be correlated with some particular type of migration pattern in North America this would offer an important clue as to the causes of trans atlantic vagrancy. In this paper some aspects of wader migration in North America will be discussed from this viewpoint.