Great Egret Ardea Alba
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Ardea Cinerea (Grey Heron) Family: Ardeidae (Herons and Egrets) Order: Ciconiiformes (Storks, Herons and Ibises) Class: Aves (Birds)
UWU The Online Guide to the Animals of Trinidad and Tobago Behaviour Ardea cinerea (Grey Heron) Family: Ardeidae (Herons and Egrets) Order: Ciconiiformes (Storks, Herons and Ibises) Class: Aves (Birds) Fig. 1. Grey heron, Ardea cinerea. [http://www.google.tt/imgres?imgurl=http://www.bbc.co.uk/lancashire/content/images/2006/06/15/grey_heron, downloaded 14 November 2012] TRAITS. Grey herons are large birds that can be 90-100cm tall and an adult could weigh in at approximately 1.5 kg. They are identified by their long necks and very powerful dagger like bills (Briffett 1992). They have grey plumage with long black head plumes and their neck is white with black stripes on the front. In adults the forehead sides of the head and the centre of the crown are white. In flight the neck is folded back with the wings bowed and the flight feathers are black. Each gender looks alike except for the fact that females have shorter heads (Seng and Gardner 1997). The juvenile is greyer without black markings on the head and breast. They usually live long with a life span of 15-24 years. ECOLOGY. The grey heron is found in Europe, Asia and Africa, and has been recorded as an accidental visitor in Trinidad. Grey herons occur in many different habitat types including savannas, ponds, rivers, streams, lakes and temporary pools, coastal brackish water, wetlands, marsh and swamps. Their distribution may depend on the availability of shallow water (brackish, saline, fresh, flowing and standing) (Briffett 1992). They prefer areas with tall trees for nesting UWU The Online Guide to the Animals of Trinidad and Tobago Behaviour (arboreal rooster and nester) but if trees are unavailable, grey herons may roost in dense brush or undergrowth. -
IUCN-SSC Stork, Ibis and Spoonbill Specialist Group Special Publication 2
IUCN-SSC Stork, Ibis and Spoonbill Specialist Group Special Publication 2 Proceedings of the IX Workshop of the AEWA Eurasian Spoonbill International Expert Group Djerba Island, Tunisia, 14th - 18th November 2018 Editors: Jocelyn Champagnon, Jelena Kralj, Luis Santiago Cano Alonso and K. S. Gopi Sundar Editors-in-Chief, Special Publications, IUCN-SSC Stork, Ibis and Spoonbill Specialist Group K.S. Gopi Sundar, Co-chair IUCN Stork, Ibis and Spoonbill Specialist Group Luis Santiago Cano Alonso, Co-chair IUCN Stork, Ibis and Spoonbill Specialist Group Invited Editors for this issue Jocelyn Champagnon, Tour du Valat, Research Institute for the Conservation of Mediterranean Wetlands, Arles, France Jelena Kralj, Institute of Ornithology, Zagreb, Croatia Expert Review Board Hichem Azafzaf, Association “les Amis des Oiseaux » (AAO/BirdLife Tunisia), Tunisia Petra de Goeij, Royal NIOZ, the Netherlands Csaba Pigniczki, Kiskunság National Park Directorate, Hungary Suggested citation of this publication: Champagnon J., Kralj J., Cano Alonso, L. S. & Sundar, K. S. G. (ed.) 2019. Proceedings of the IX Workshop of the AEWA Eurasian Spoonbill International Expert Group. IUCN-SSC Stork, Ibis and Spoonbill Specialist Group Special Publication 2. Arles, France. ISBN 978-2-491451-00-4. Recommended Citation of a chapter: Marion L. 2019. Recent trends of the breeding population of Spoonbill in France 2012- 2018. Pp 19- 23. In: Champagnon J., Kralj J., Cano Alonso, L. S. & Sundar, K. S. G. (ed.) Proceedings of the IX Workshop of the AEWA Eurasian Spoonbill International Expert Group. IUCN-SSC Stork, Ibis and Spoonbill Specialist Group Special Publication 2. Arles, France. INFORMATION AND WRITING DISCLAIMER The information and opinions expressed in this publication belong to the authors. -
The Grey Heron
Bird Life The Grey Heron t is quite likely that if someone points out a grey heron to you, I you will remember it the next time you see it. The grey heron is a tall bird, usually about 80cm to 1m in height and is common to inland waterways and coasts. Though the grey heron has a loud “fraank” call, it can most often be seen standing silently in shallow water with its long neck outstretched, watching the water for any sign of movement. The grey heron is usually found on its own, although some may feed close together. Their main food is fish, but they will take small mammals, insects, frogs and even young birds. Because of their habit of occasionally taking young birds, herons are not always popular and are often driven away from a feeding area by intensive mobbing. Mobbing is when smaller birds fly aggressively at their predator, in this case the heron, in order to defend their nests or their lives. Like all herons, grey herons breed in a colony called a heronry. They mostly nest in tall trees and bushes, but sometimes they nest on the ground or on ledge of rock by the sea. Nesting starts in February,when the birds perform elaborate displays and make noisy callings. They lay between 3-5 greenish-blue eggs, often stained white by the birds’ droppings. Once hatched, the young © Illustration: Audrey Murphy make continuous squawking noises as they wait to be fed by their parents. And though it doesn’t sound too pleasant, the parent Latin Name: Ardea cinerea swallows the food and brings it up again at the nest, where the Irish Name: Corr réisc young put their bills right inside their parents mouth in order to Colour: Grey back, white head and retrieve it! neck, with a black crest on head. -
Flamingo ABOUT the GROUP
Flamingo ABOUT THE GROUP Bulletin of the IUCN-SSC/Wetlands International The Flamingo Specialist Group (FSG) was established in 1978 at Tour du Valat in France, under the leadership of Dr. Alan Johnson, who coordinated the group until 2004 (see profile at www.wetlands.org/networks/Profiles/January.htm). Currently, the group is FLAMINGO SPECIALIST GROUP coordinated from the Wildfowl & Wetlands Trust at Slimbridge, UK, as part of the IUCN- SSC/Wetlands International Waterbird Network. The FSG is a global network of flamingo specialists (both scientists and non- scientists) concerned with the study, monitoring, management and conservation of the world’s six flamingo species populations. Its role is to actively promote flamingo research and conservation worldwide by encouraging information exchange and cooperation amongst these specialists, and with other relevant organisations, particularly IUCN - SSC, Ramsar, WWF International and BirdLife International. FSG members include experts in both in-situ (wild) and ex-situ (captive) flamingo conservation, as well as in fields ranging from field surveys to breeding biology, diseases, tracking movements and data management. There are currently 165 members around the world, from India to Chile, and from France to South Africa. Further information about the FSG, its membership, the membership list serve, or this bulletin can be obtained from Brooks Childress at the address below. Chair Assistant Chair Dr. Brooks Childress Mr. Nigel Jarrett Wildfowl & Wetlands Trust Wildfowl & Wetlands Trust Slimbridge Slimbridge Glos. GL2 7BT, UK Glos. GL2 7BT, UK Tel: +44 (0)1453 860437 Tel: +44 (0)1453 891177 Fax: +44 (0)1453 860437 Fax: +44 (0)1453 890827 [email protected] [email protected] Eastern Hemisphere Chair Western Hemisphere Chair Dr. -
Resource-Dependent Weather Effect in the Reproduction of the White Stork Ciconia Ciconia
Resource-dependent weather effect in the reproduction of the White Stork Ciconia ciconia Damijan Denac1 Denac D. 2006. Resource-dependent weather effect in the reproduction of the White Stork Ciconia ciconia. Ardea 94(2): 233–240. Weather affects the breeding success of White Stork Ciconia ciconia, but the effect has not been studied in the context of different food resources or habitat quality. The aim of this study was to determine whether the impact of weather conditions on breeding success was dependent on habitat quality. The effect of weather on reproduction was analysed in two populations that differed significantly in the availability of suitable feeding habitats. Multiple regression analyses revealed that of the weather variables analysed (average temperature and rainfall in April, May and June), rainfall in May and temperature in June explained a sig- nificant part of the variation in numbers of fledged chicks per pair, but only in the population with poorer food resources. The lack of weather influence in the population with richer food resources was tentatively explained by the larger brood sizes. More effective heat conservation in larger broods, and thus lower chick mortality during cold weather, could be the underlying mechanism for the different response to weather in the two populations. Key words: breeding success, Ciconia ciconia, habitat quality, resource dependent weather-effect, White Stork 1National Institute of Biology, Vecv na pot 111, SI–1000 Ljubljana, Slovenia ([email protected]) INTRODUCTION optimal feeding habitats, whereas fields, especially cornfields, are suboptimal (Sackl 1987, Pinowski et The influences of food as a resource and weather al. -
Breeding Birds of the Texas Coast
Roseate Spoonbill • L 32”• Uncom- Why Birds are Important of the mon, declining • Unmistakable pale Breeding Birds Texas Coast pink wading bird with a long bill end- • Bird abundance is an important indicator of the ing in flat “spoon”• Nests on islands health of coastal ecosystems in vegetation • Wades slowly through American White Pelican • L 62” Reddish Egret • L 30”• Threatened in water, sweeping touch-sensitive bill •Common, increasing • Large, white • Revenue generated by hunting, photography, and Texas, decreasing • Dark morph has slate- side to side in search of prey birdwatching helps support the coastal economy in bird with black flight feathers and gray body with reddish breast, neck, and Chuck Tague bright yellow bill and pouch • Nests Texas head; white morph completely white – both in groups on islands with sparse have pink bill with Black-bellied Whistling-Duck vegetation • Preys on small fish in black tip; shaggy- • L 21”• Lo- groups looking plumage cally common, increasing • Goose-like duck Threats to Island-Nesting Bay Birds Chuck Tague with long neck and pink legs, pinkish-red bill, Greg Lavaty • Nests in mixed- species colonies in low vegetation or on black belly, and white eye-ring • Nests in tree • Habitat loss from erosion and wetland degradation cavities • Occasionally nests in mesquite and Brown Pelican • L 51”• Endangered in ground • Uses quick, erratic movements to • Predators such as raccoons, feral hogs, and stir up prey Chuck Tague other woody vegetation on bay islands Texas, but common and increasing • Large -
Courtship and Pair Formation in the Great Egret
COURTSHIP AND PAIR FORMATION IN THE GREAT EGRET Joca• H. Wt•s• THv. reproductivebehavior of the Ardeidaehas receivedconsiderable attention (Verwey 1930; Meanley 1955; Cottrille and Cottrille 1958; Meyerriecks1960 and in Palmer 1962; Baerendsand Van Der Cingel 1962; Blaker 1969a, 1969b; Lancaster 1970). Although Meyerriecks (in Palmer 1962) summarizedthe behavior and McCrimmon (1974) described two sexual displays in detail, the reproductive behavior of the Great Egret (Casmerodiusalbus egretta) remainsessentially unknown. This paper describescourtship and pair formationin this little studied species. STLTD¾AREAS AND METIIODS Most of the observations were made at Avery Island, Iberia Parish, Louisiana, 91ø 30' W, 29ø 30• N. Great Egrets nested on five bamboo platforms (ranging from 4 by 20 m to 7 by 35 m, approximate]y) 2 m above the water surface in "Bird City," a 5-ha freshwater pond in the center of the island. Short lengths of bamboo twigs were provided for nest material. The five bamboo platforms supported 430 •-• 15 nesting pairs of Great Egrets in 1974. This number represented a drastic decline from previous years (E. M. Simmons, pets. comm.) and coincidedwith the establishmentof a second heronry 1 km southeast of Bird City. Additional observationswere made at Headquarter Pond, St. Marks National Wildlife Refuge, and Smith Island, Wakulla County, Florida, 84ø 10' W, and 84ø 19• W, 30ø 05' N, and 30ø 03' N, respectively. At Headquarter Pond Great Egrets nested in willows growing in open water more than 0.6 m in depth. The number of nesting egretsdecreased from 38 pairs in 1971 to 9 pairs in 1972 (see below). -
Effects of Nest Characteristics and Black Rat Rattus Rattus Predation on Daily Survival Rates of Great Egret Ardea Alba Nest
Effects of nest characteristics and black rat Rattus rattus predation on daily survival rates of great egret Ardea alba nests in mangrove forest in the Hara Biosphere Reserve, the Persian Gulf Authors: Elnaz Neinavaz, Ahmad Barati, Jessi L. Brown, Farzaneh Etezadifar, and Besat Emami Source: Wildlife Biology, 19(3) : 240-247 Published By: Nordic Board for Wildlife Research URL: https://doi.org/10.2981/12-087 BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Complete website, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/terms-of-use. Usage of BioOne Complete content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Downloaded From: https://bioone.org/journals/Wildlife-Biology on 04 Apr 2019 Terms of Use: https://bioone.org/terms-of-use Wildl. Biol. 19: 240-247 (2013) Original article DOI: 10.2981/12-087 Ó Wildlife Biology, NKV www.wildlifebiology.com Effects of nest characteristics and black rat Rattus rattus predation on daily survival rates of great egret Ardea alba nests in mangrove forest in the Hara Biosphere Reserve, the Persian Gulf Elnaz Neinavaz, Ahmad Barati, Jessi L. -
A Year Following Egrets
❚ 10 The Ardeid ❚■ Insights from birds with GPS tags A Year Following Egrets by David Lumpkin o a Great Egret (Ardea alba), Tomales Bay the deployment of our tags, all three Tis full of food, but that food is not always egrets remained near Toms Point in available. Every two weeks, around the full northern Tomales Bay, where we and new moons, the lowest tides and greatest could regularly download data foraging opportunity coincide with the early with the handheld receiver Figure 1. Egret 9 flying over Cypress morning, making breakfast on the bay an easy then eagerly rush back Grove the day after it was captured in affair. During low tides, hundreds of acres of to the office to upload September 2018. intertidal eelgrass are exposed, allowing egrets the data to a computer to stab at herring during spawning events or and see what the birds had been doing. About a to hunt pipefish, which try to wrap themselves month after tagging, suddenly two of the three a freshwater pond at Toms Point. I watched around the egret’s bill to avoid being swal- egrets could no longer be found on Tomales him forage there several times. Though this lowed. As the tide cycle shifts and morning tides Bay. Worried something might have happened pond was well covered by aquatic plants, he was become higher, the eelgrass is exposed for fewer to them, and perplexed that they might leave an consistently able to find small fish, picking them hours per day, reducing foraging opportunities area where they likely had active nests, I drove out from tiny gaps in foliage. -
Snowy Egret Egretta Thula One of California's Most Elegant Birds, The
Herons and Bitterns — Family Ardeidae 133 Snowy Egret Egretta thula One of California’s most elegant birds, the Snowy Egret frequents both coastal and inland wetlands. Since the 1930s, when it recovered from persecution for its plumes, it has been common in fall and winter. Since 1979, it has also established an increasing num- ber of breeding colonies. Yet, in contrast to the Great Egret, the increase in Snowy Egret colonies has not been accompanied by a clear increase in the Snowy’s numbers. Though dependent on wetlands for forag- ing, the Snowy Egret takes advantage of humanity, from nesting in landscaping to following on the heels of clam diggers at the San Diego River mouth, snap- ping up any organisms they suck out of the mud. Breeding distribution: The first recorded Snowy Egret colonies in San Diego County were established at Buena Vista Lagoon in 1979 (J. P. Rieger, AB 33:896, 1979) and Photo by Anthony Mercieca in the Tijuana River valley in 1980 (AB 34:929, 1980). By 1997 these were no longer active, but during the atlas Two of the largest colonies lie near San Diego and period we confirmed nesting at eight other sites. Because Mission bays. The colony on the grounds of Sea World, Snowy Egrets often hide their nests in denser vegetation behind the Forbidden Reef exhibit (R8), was founded than do the Great Egret and Great Blue Heron, assessing in 1991 and contained 42 nests and fledged 44 young in the size of a Snowy Egret colony is more difficult than for 1997 (Black et al. -
Great Blue Heron Ardea Herodias
Great Blue Heron Ardea herodias Throughout the 20th century, Great Blue Herons have been increasing within Ohio. Between 1918 and 1935, Hicks (1935) reported 61 colonies in 33 counties with an estimated statewide population of 1500–2000 pairs. Except for one heronry in Warren County, most of these colonies were confined to the northern half of glaciated Ohio and along the unglaciated plateau in eastern Ohio as far south as Tuscarawas County. However, not all of these colonies were extant at the same time and Hicks was also unaware of some newly established colonies. A large heronry near Fremont was composed of 1118 nests in 1935 (Campbell 1968), indicating that Hicks’ population estimate was probably low. Ohio’s population of Great Blue Herons increased in subse- quent decades, although this expansion was poorly documented. Only Robbins, C. S., et al. (1986) reported a significant increase in Ohio between 1965 and 1979 based on data obtained from the Breeding Bird Survey routes. The current distribution of Great Blue Heron colonies within Ohio was initially surveyed during 1980 and 1981 by the Division of Natural Areas and Preserves. The results of this preliminary survey were expanded during the Atlas Project to produce records of 89 colonies scattered across 52 counties; only these colonies are exhibited on the accompanying map. Every colony was not necessarily active each year, particularly small Mike Williams - ODNR Photographer colonies with 10 or fewer pairs. Additionally, a number of small colonies may have been overlooked. The distribution of breeding Great Blue Heron colonies may be located adjacent to lakes, Great Blue Herons has expanded along the unglaciated Allegheny rivers, and marshes, although inland heronries are frequently Plateau where they are more widely distributed than reported by found in isolated woodlots several miles from any water. -
MADAGASCAR: the Wonders of the “8Th Continent” a Tropical Birding Set Departure
MADAGASCAR: The Wonders of the “8th Continent” A Tropical Birding Set Departure November 3—28, 2013 Guide: Ken Behrens All photos taken during this trip. All photos by Ken Behrens unless noted otherwise. TOUR SUMMARY Madagascar has long been a core destination for Tropical Birding, and with last year’s opening of a satellite office in the country, we have further solidified our expertise in the “Eighth Continent.” This was another highly successful set-departure tour to this special island. It included both the Northwestern Endemics Pre-Trip at the start and the Helmet Vanga extension to the Masoala Peninsula at the end. Although Madagascar poses some logistical challenges, especially in the form of the national airline Air Madagascar, we had no problems on this tour, not even a single delayed flight! The birding was great, with 196 species recorded, including almost all of the island’s endemic birds. As usual, the highlight was seeing all five of the incredible ground-rollers, from the roadrunner-like Long-tailed of the spiny forest to the wonderful rainforest-dwelling Scaly. There was a strong cast of vangas, including Helmet, Bernier’s, and Sickle-billed. In fact, we saw every member of the family save the mysterious Red-tailed Newtonia which is only regularly seen in the far south. As normal, the couas were also a favorite. From the shy and beautiful Red-breasted of Madagascar Set Departure Tour Nov. 3-28, 2013 the eastern rainforest to the huge Giant Coua of the dry western forest, we were looking for and at couas virtually every day! The bizarre mesites form a Malagasy endemic family, and we had superb extended views of all three members of the family.