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Wednesday, 31 March 1999

1-4-1999 IGUAZU, ARGENTINA - PINK BANDED SISTER BUTTERFLY (Adelpha-lycorias)


Adelpha lycorias, the pink-banded sister, is a species of butterfly of the family Nymphalidae.

Adelpha lycorias has a wingspan reaching about 50 millimetres (2.0 in). The uppersides of the wings are generally deep brown, with black apex of the anterior wings. The anterior wings are crossed by a broad band of pink or crimson, irregular in its outer margin, commencing on the middle of the costa and ending at the outer margin. The undersides are chocolate colour, while the nervure, the lines between them and the submarginal line are black. The band of the anterior wings is almost white, slightly tinged with crimson.

This species can be found in Mexico, Brazil, Venezuela, Peru, Bolivia, Colombia, Ecuador and Guatemala, usually between 500 and 1800 meters.


1-4-1999 IGUAZU, ARGENTINA - BLOND CRESTED WOODPECKER (Celeus flavescens)


The blond-crested woodpecker (Celeus flavescens) is a species of bird in subfamily Picinae of the woodpecker family Picidae. It is found in Argentina, Brazil, and Paraguay.

The blond-crested woodpecker's subspecies C. f. intercedens is the more northerly of the two. It is found in western Bahia, Goiás, and Minas Gerais in east-central Brazil. The nominate subspecies is found southeast of it, from southern Bahia to Rio Grande do Sul and into eastern Paraguay and Argentina's Misiones Province. The species inhabits the interior and edges of humid forest and also gallery forest, savanna, caatinga, and orchards.

The blond-crested woodpecker is a year-round resident throughout its range. 

1-4-1999 IGUAZU, ARGENTINA - RHINOCEROUS BEETLE (Enema pan)


Dynastinae beetles (Coleoptera: Scarabaeidae) are important due to their role in recycling plant material and promoting nutrient turnover. However, some species are phytophagous and can attack crop plants, thus becoming pests. Here, we provide information on the biology and behavior of the rhinoceros beetle Enema pan (F.) (Oryctini), an abundant species in the area of Cerrado-Pantanal ecotone, Aquidauana, Mato Grosso do Sul, Brazil. Adults were collected with a light trap deployed daily from January 2006 to December 2007 in the experimental farm of the Universidade Estadual de Mato Grosso do Sul (Aquidauana campus). Adults were maintained in plastic containers and observations were made daily. Temporal distribution of adults of E. pan occurred in September and October (2006) and from October to December (2007). Flight started at 1930 hours and ended at 2330 hours. Twenty-four eggs (3.28 mm in length by 2.32 mm in width) with a whitish color were ovipositioned directly in to the soil. Adult longevity averaged 22.0 d in the laboratory conditions. Cephalic horn length, body length, and width of E. pan males are greater than those of females. The weight of adults of both sexes was similar. Cephalic horn length of the males of E. pan was positively correlated with his body size. Mating occurred between 0800 and 1030 hours and lasted on average 18.1 min in the laboratory. Several fights among males and other behaviors involving males and females were observed and are reported.

1-4-1999 IGUAZU, ARGENTINA - SWALLOW TAILED MANAKIN (MALE) (Chiroxiphia caudata)


The blue manakin or swallow-tailed manakin (Chiroxiphia caudata) is a small species of bird in the family Pipridae. It is found mainly in the Atlantic Forest of south-eastern Brazil, eastern Paraguay and far north-eastern Argentina. Its typical habitat is wet lowland or montane forest and heavily degraded former forest. Males have a bright blue body, black head wings and tail and a red crown. Females and juveniles are olive-green. At breeding time, males are involved in lekking behaviour when they sing and dance to impress females. This is a common species with a wide range, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern"

Monday, 21 September 1992

21-9-1992 ANCHORAGE, ALASKA - SPRUCE GOOSE (Canachites canadensis)


The spruce grouse (Canachites canadensis), also known as Canada grouse, spruce hen or fool hen, is a medium-sized grouse closely associated with the coniferous boreal forests or taiga of North America. It is the only member of the genus Canachites.

It is one of the most arboreal grouse species, fairly well adapted to perching and moving about in trees. When approached by a predator, it relies on camouflage and immobility to an amazing degree; for example, letting people approach within a few feet before finally taking flight.

As a specialist of the taiga, the spruce grouse is found throughout Canada. In the United States, it is present in Alaska, northern New England, the Adirondacks in New York, northern Michigan, northeastern Minnesota, northern Wisconsin and the montane coniferous forests of Montana, Idaho, Maine, Oregon, and Washington. Spruce grouse are always associated with conifer-dominated forests, be they pine, spruce, or fir. They seem to prefer young successional stands. In summer they can be found near rich understory of blueberries and other shrub, and in winter they prefer denser stands.

Sunday, 20 September 1992

20-9-1992 ANCHORAGE, ALASKA - BLACK BACKED WOODPECKER (Picoides arcticus)


The black-backed woodpecker, known scientifically as Picoides arcticus and colloquially as the Arctic three-toed woodpecker, is a bird of medium stature, measuring approximately 23 cm (9.1 in) in length. It is distinguished by its predominantly black plumage, which adorns the head, back, wings, and rump, contrasting with the white underparts extending from throat to belly. The flanks are white, barred with black, and the tail is black with white outer feathers. A notable feature of this species is the presence of only three toes on each foot, a trait shared with its close relatives, the American and Eurasian three-toed woodpeckers. The adult male is further characterized by a striking yellow cap, a touch of color amidst the otherwise somber hues.

This woodpecker's range extends throughout the boreal forests of North America, with a year-round presence in its chosen habitats. It is a non-migratory bird, although historical records indicate occasional irruptions beyond its usual range.

The black-backed woodpecker is a burnt-forest specialist, adept at exploiting the wood-boring beetle populations that proliferate in recently burnt trees. It primarily feeds by pecking at the wood, with a smaller portion of its diet obtained by gleaning insects from branches. Nesting occurs in the spring, with each pair excavating a new nest annually. Other bird species often reuse these abandoned cavities for their own nesting purposes.

The vocal repertoire of the black-backed woodpecker includes a distinctive call note, a single, sharp "pik" sound, which is lower in pitch compared to that of the American three-toed woodpecker.

Breeding activities commence in April and May, with the woodpecker couple sharing the responsibility of incubating the eggs. The male takes on the sole duty of incubation during the night. After hatching, the altricial chicks are brooded until they reach the nestling phase, with both parents contributing to feeding. Fledging occurs approximately 24 days post-hatching.

Friday, 18 September 1992

18-9-1992 JUNEAU, ALASKA - SWAINSON'S THRUSH (Catharus ustulatus)


Swainson's thrush (Catharus ustulatus), also called olive-backed thrush and russet-backed thrush, is a medium-sized thrush. It is a member of genus Catharus and is typical of it in terms of its subdued coloration and beautiful, ascending flute-like voice. Swainson's thrush was named after William Swainson, an English ornithologist.

Does much feeding on ground, but not as much as the other brown thrushes. Also forages in trees, and may hover momentarily to take insects from foliage or may catch them in mid-air.

 

18-9-1992 WHITTIER, ALASKA - GREAT HORNED OWL (Bubo virginianus)


This owl is native to the Americas with its range, covering the greater part of North America, stretching to Central America, and reaching South America. The Great horned owl occurs primarily in woodlands and open fields, scattered throughout its range. However, the species can also be found in mangroves, grasslands, swampy and marshy areas as well as deserts. In addition, this bird occasionally inhabits human settlements, found throughout rural and urban areas.

These birds are solitary animals, socializing only for nesting. They usually roost by day in protected places such as a tree limb or a recess in a rock. Great horned owls are efficient nighttime hunters, though they are known to hunt in the daytime as well. Horned owls are non-migratory, remaining within the same area throughout the year. Some individuals may become "territorial floaters", not having a certain territory and constantly traveling through territories of other owls. These birds use hooting as a form of communication. Through hooting, they can search for mates during the mating season as well as set up territorial dominance.

Thursday, 17 September 1992

18-9-1992 JUNEAU, ALASKA - DOWNY WOODPECKER (Dryobates pubescens)


The downy woodpecker (Dryobates pubescens) is a species of woodpecker, the smallest in North America. Length ranges from 14 to 18 cm (5.5 to 7.1 in). Downy woodpeckers primarily live in forested areas throughout the United States and Canada, with the exception of deserts in the southwest and the northern tundra. The bird nests in tree cavities and feeds primarily on insects, although it supplements its diet with seeds and berries. The downy woodpecker is very similar in appearance to the hairy woodpecker, although they are not closely related.

Wednesday, 10 August 1988

10-8-1988 SERENGETTI, KENYA - RUPPELL'S STARLING (Lamprotornis purpuroptera)


Rüppell's starling (Lamprotornis purpuroptera), also known as Rueppell's glossy-starling or Rueppell's long-tailed starling, is a species of starling in the family Sturnidae. It is found in Burundi, the Democratic Republic of the Congo, Eritrea, Ethiopia, Kenya, Rwanda, Somalia, South Sudan, Sudan, Chad, Tanzania, and Uganda.