15 research outputs found
Pandion haliaetus
No full textPosible observación, transmitida por D. J. de Prada al autor, de un Águila pescadora (Pandion haliaetus) en Ledesma (Salamanca), pescando en el río Tormes.An uncertain observation, communicated from D. J. de Prada to the author, of an Osprey (Pandion haliaetus) fishing at the Tormes River in Ledesma (Salamanca)
Osprey (Pandion Haliaetus): Notes On Unknown And Poorly Studied Behaviors
No full textThis paper summarizes selected data collected during my recent field studies of nesting and foraging Osprey (Pandion haliaetus) in Florida and Texas, and it includes descriptions of several unknown behaviors documented in photographs. The unknown courtship display of Stick-Breaking-Off-and-Presenting Display was observed several times, performed by males inside the Honeymoon Island semi-colony in Florida. During this courting display, Osprey males broke off sticks in view of their mates and brought those sticks near the female’s perching site. Osprey intraspecific kleptoparasitism of nesting materials, never reported before, was observed on several occasions. A curious behavior of Osprey swallowing seagrass was also observed that may be related to the pellet casting process. The author discusses the possibility of Osprey using a low angle strike to avoid the stiff, sharp tips of some fish dorsal fin spines when striking its prey. The male Wings-Drooping-And-Shivering display observed at Honeymoon Island Osprey population is the second known record of this display for Pandion sp. and first record for Pandion haliaetus, if Pandion cristatus is accepted as a separate species. Other selected behaviors reported and discussed include a few comfort movements and cases where observed Ospreys were willing to take dive chances for exchange of small or partially eaten fish with a new larger one
Salida de campo de Carlos Valverde Gómez al río Adaja, en Valladolid, el 21 de marzo de 1954
No full textSalida de campo de Carlos Valverde Gómez, hermano del autor, al río Adaja (Valladolid) el 21 de marzo de 1954, de la que se anotaron observaciones sbore las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Anas crecca (Cerceta común), Anas platyrhynchos (Ánade azulón, también llamado Pato bravío por el autor), Buteo buteo (Busardo ratonero, también llamado Águila ratera), Clamator glandarius (Críalo europeo), Milvus migrans (Milano negro) y Pandion haliaetus (Águila pescadora).Field trip of Carlos Valverde Gómez, brother of the author, to the Adaja River (Valladolid) the 21st of March of 1954, of which there were noted observations about the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Anas crecca (Common Teal), Anas platyrhynchos (Mallard), Buteo buteo (Common Buzzard), Clamator glandarius (Great Spotted Cuckoo), Milvus migrans (Black Kite) and Pandion haliaetus (Osprey)
Informes de Carlos Valverde Gómez sobre la fauna de Marbella (Málaga), entre el 20 de julio y el 20 de septiembre de 1948
No full textInformes de Carlos Valverde Gómez, hermano del autor, sobre la fauna de Marbella (Málaga), entre el 20 de julio y el 20 de septiembre de 1948, en los que se incluye a culebras y tortugas (sin anotar las especies), y a las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Bubulcus ibis (Garcilla Bueyera), Ch. capricasius (especie de "andarius", llamada así por el autor), Charadrius alexandrinus (Chorlitejo patinegro), Charadrius hiaticula (Chorlitejo grande), Chlidonias niger (Fumarel común), Egretta alba (Garceta grande), Gallinula chloropus (Gallineta común, también llamada G.gallinula por el autor), Lanius sp. (Alcaudón), Larus argentatus (Gaviota argéntea), Larus cachinnans (Gaviota patiamarilla), Larus fuscus (Gaviota sombría), Oenanthe oenanthe (Collalba gris), Pandion haliaetus (Águila pescadora) y Phoenicopterus sp. (Flamenco).Reports from Carlos Valverde Gómez, brother of the author, about the animals of Marbella (Málaga), between the 20th of July and the 20th of September of 1948, of which there were noted observations about snakes and turtles (without identifying the species), and the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Bubulcus ibis (Cattle Egret), Ch. capricasius (a species of plover, as refered by the author), Charadrius alexandrinus (Kentish Plover), Charadrius hiaticula (Common Ringed Plover), Chlidonias niger (Black Tern), Egretta alba (Great Egret), Gallinula chloropus (Common Moorhen, also refered as G.gallinula by the author), Lanius sp. (Shrike), Larus argentatus (Herring Gull), Larus cachinnans (Yellow-legged Gull), Larus fuscus (Lesser Black-backed Gull), Oenanthe oenanthe (Northern Wheatear), Pandion haliaetus (Osprey) and Phoenicopterus sp. (Flamingo)
Evolution and presence of diurnal predatory birds in the Carpathian basin
No full textThe author describes the presence of the oldest extinct diurnal birds of prey species in the world and fossilized representatives of different families, as well as the presence of recent species in the Carpathian Basin among fossilized remains. In case of ospreys, one of the oldest known materials is classified as a new extinct species named Pandion pannonicus. The text is supplemented by a plate and a size chart
Salida de campo a Puente Duero - Esparragal y Simancas, en Valladolid, el 8 de septiembre de 1954
No full textSalida de campo a Puente Duero y Simancas, en la provincia de Valladolid, el 8 de septiembre de 1954, de la que se anotaron observaciones sobre las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Ardea sp. (Garza), Chlidonias sp. (Fumarel), Circus sp. (Aguilucho), Columba palumbus (Paloma torcaz), Cuculus canorus (Cuco común), Falco subbuteo (Alcotán), Falco tinnunculus (Cernícalo vulgar), Jynx torquilla (Torcecuello Euroasiático), Merops apiaster (Abejaruco europeo), Milvus milvus (Milano real), Nycticorax nycticorax (Martinete común), Pandion haliaetus (Águila pescadora), Perdiz (Alectoris sp. o Perdix sp.), Tringa ochropus (Andarríos grande) y Upupa epops (Abubilla, también llamada Bubillo por el autor).Field trip to Puente Duero and Simancas, at the province of Valladolid, the 8th of September of 1954, of which there were noted observations about the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Ardea sp. (Heron), Chlidonias sp. (Tern), Circus sp. (Harrier), Columba palumbus (Common Wood-pigeon), Cuculus canorus (Common Cuckoo), Falco subbuteo (Eurasian Hobby), Falco tinnunculus (Common Kestrel), Jynx torquilla (Eurasian Wryneck), Merops apiaster (European Bee-eater), Milvus milvus (Red Kite), Nycticorax nycticorax (Black-crowned Night Heron), Pandion haliaetus (Osprey), Partridge (Alectoris sp. or Perdix sp.), Tringa ochropus (Green Sandpiper) and Upupa epops (Eurasia Hoopoe)
Salida de campo a las proximidades del río Adaja, a su paso por la provincia de Valladolid, el 18 y 19 de marzo de 1955
No full textSalida de campo a las proximidades del río Adaja, seguramente a su paso por algún área de la provincia de Valladolid, el 18 y 19 de marzo de 1955, de la que se anotaron observaciones sobre las siguientes aves: Actitis hypoleucos (Andarríos chico, llamado Actynioides hypoleucus por el autor), Alcedo atthis (Martín pescador común), Anas platyrhynchos (Ánade azulón, también llamado Pato bravío por el autor), Anas sp. (Cerceta), Anser sp. (Ánsar), Buteo buteo (Busardo ratonero, también llamado Águila ratera), Clamator glandarius (Críalo europeo), Columba palumbus (Paloma torcaz), Cyanopica cooki (Rabilargo, llamado "Charro" y C. cyana por el autor), Dendrocopos sp. (Pico, llamado Dryobates sp. por el autor), Erithacus rubecula (Petirrojo), Hirundo rustica (Golondrina común), Milvus migrans (Milano negro), Milvus milvus (Milano real), Motacilla alba (Lavandera blanca), Pandion haliaetus (Águila pescadora), Regulus ignicapillus (Reyezuelo listado), Strix aluco (Cárabo común), Sturnus unicolor (Estornino negro), Tringa ochropus (Andarríos grande), Turdus ericetorum (considerado actualmente Turdus philomelos, el Zorzal común), Turdus musicus (considerado actualmente Turdus philomelos, el Zorzal común) y Upupa epops (Abubilla, también llamada Bubillo por el autor). Se incluye el análisis del contenido estomacal de un Busardo ratonero.Field trip to the vicinity of the Adaja River, probably passing through any area of the province of Valladolid, the 18th and 19th of March of 1955, of which there were noted observations about the following birds: Actitis hypoleucos (Common Sandpiper, refered as Actynioides hypoleucus by the author), Alcedo atthis (Common Kingfisher), Anas platyrhynchos (Mallard), Anas sp. (Teal), Anser sp. (Goose), Buteo buteo (Common Buzzard), Clamator glandarius (Great Spotted Cuckoo), Columba palumbus (Common Wood-pigeon), Cyanopica cooki (Azure-winged Magpie, refered as C. cyana by the author), Dendrocopos sp. (Spotted Woodpecker, refered as Dryobates sp. by the author), Erithacus rubecula (European Robin), Hirundo rustica (Barn Swallow), Milvus migrans (Black Kite), Milvus milvus (Red Kite), Motacilla alba (White Wagtail), Pandion haliaetus (Osprey), Regulus ignicapillus (Firecrest), Strix aluco (Tawny Owl), Sturnus unicolor (Spotless Starling), Tringa ochropus (Green Sandpiper), Turdus ericetorum (currently considered Turdus philomelos, the Song Thrush), Turdus musicus (currently considered Turdus philomelos, the Song Thrush) and Upupa epops (Eurasia Hoopoe). The stomach content analysis of a Common Buzzard is included
Avian predators transmit fear along the air-water interface influencing prey and their parental care
Get PDFThe non-consumptive consequences of predators on prey behavior, survival, and demography have recently garnered significant attention by ecologists. However, the impacts of top predators on free-ranging prey are challenging to evaluate as the most common fright responses for prey is to leave the area of risk. Additionally, the top-down impacts of avian predators on aquatic environments are surprisingly overlooked. Here we investigated the non-consumptive effects of avian predators on parental care in sunfish (Lepomis gibbosus, L., 1758) through the use of a realistic model of a predatory bird, the osprey (Pandion haliaetus, L., 1758). Our predator model exacted dramatic metabolic fright responses and inducible defenses in experimental fish resulting in significant behavioral changes with respect to their parental care. Key parental behaviors including in-nest rotations and egg and nest maintenance were noticeably altered by predator treatments demonstrating as much as an order of magnitude difference in parental performance, suggesting that even transient predation risk might decrease reproductive fitness. Our data provide important new insights on how the landscape of fear operates along the air-water interface and suggests that avian predators may have greater controlling effects on fish populations than previously thought.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
Nest Defense Behaviour of Four Raptor Species (Osprey, Bald Eagle, Ferruginous Hawk and Red-tailed Hawk) to a Novel Aerial Intruder – A Small Rotary-winged Drone
No full textA small rotary-winged Unmanned Aerial Vehicle (UAV) was flown above the nests of four raptor species: Osprey (Pandion haliaetus), Bald Eagle (Haliaeetus leucocephalus), Ferruginous Hawk (Buteo regalis) and Red-tailed Hawk (B. jamaicensis) to document the parental nest defense response to the aircraft. Adult behaviour was documented with a voice recorder and an Ethogram, starting ~100m distant from the nest and continuing until the base of the nest was reached, the survey completed, and the nest area exited. All adult movements and vocalizations were recorded with distance of bird and researchers from the nest when a given behaviour occurred. Ospreys showed the strongest nest defense response followed by Ferruginous Hawks and Red-tailed Hawks with Bald Eagles showing the least aggressive response. Ospreys showed no greater response to the UAV in the air near the nest than to researchers simply standing at the base of the nest structure, while Bald Eagles showed a significantly higher response to the aircraft than researchers at the nest base. Although aggression varied, no species showed aggression at levels that would discourage the use of UAVs to survey raptor nests. When a proper flight technique is adopted, UAVs can offer a useful tool for surveying raptor nests.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
