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Wednesday, 1 September 2010

21-9-1992 SITKA, ALASKA - HORNED PUFFIN (Fratercula corniculata)


The horned puffin (Fratercula corniculata) is an auk found in the North Pacific Ocean, including the coasts of Alaska, Siberia and British Columbia. It is a pelagic seabird that feeds primarily by diving for fish. It nests in colonies, often with other auks.

It is similar in appearance to the Atlantic puffin, its closest relative of the North Atlantic, but differs by a "horn" of black skin located above the eye, present in adult birds.

This juvenile lacks the horn and brilliantly colored rhamphotheca seen in sexually mature birds during the breeding season

The height of the adult puffin is approximately 20 cm (8 in), the weight is approximately 500 g (18 oz), and the wingspan is approximately 58 cm (23 in). Horned puffins are monomorphic (the male and female exhibit the same plumage coloration). Sexually mature birds have a small fleshy black "horn" extending upwards from the eye, from which the animal derives its common name — the horned puffin. A dark eyestripe extends backwards from the eye towards the occiput. The cheeks are white, with a yellow wattle at the base of the bill. The legs and feet are orange.

The horned puffin's bill, which is larger than those of other puffin species, is red at the tip and yellow at the base. In summer (breeding) plumage, the bill's outer layer – the rhamphotheca – grows in size and turns bright yellow with a dark orange tip. The size and color of the rhamphotheca helps to attract a mate. The brilliant outer layers of the rhamphotheca are shed in late summer, as the face reverts to a gray and black color, and the legs and feet fade to a pale fleshy color. This phase is referred to as eclipse plumage. The puffin's bill has fluorescent properties that are also used to attract a partner. Puffins can see ultraviolet rays, allowing them to spot luminescence on the bills of other puffins during the courtship display.

Wednesday, 16 April 2003

16-4-2003 PANAMA - GOLDEN COLLARED MANAKIN (Manacus vitellinus)


The golden-collared manakin (Manacus vitellinus) is a species of bird in the family Pipridae.

It is found in Colombia and Panama. Its natural habitats are subtropical or tropical moist lowland forest and heavily degraded former forest.

Wednesday, 10 October 2001

10-10-2000 SYDNEY, AUSTRALIA - BLUE WINGED KOOKABURRA (Dacelo leachii)


The blue-winged kookaburra (Dacelo leachii) is a large kingfisher, slightly smaller than its cousin, the laughing kookaburra. It boasts a cream-colored plumage with brownish bars, blue wings, and a blue rump. The male is distinguished by its blue tail, while the female's tail is rufous with blackish bars.

Adults measure 38 to 42 cm in length and weigh between 260 to 330 grams. They lack the dark mask of the laughing kookaburra, have more blue in the wing, and striking white eyes. The bill is quite heavy. Juveniles can be identified by their more pronounced brown bars and marks, and their eyes are brown for the first two years.

This species is found in open savannah woodland, Melaleuca swamps, and farmlands, including sugarcane plantations.

The blue-winged kookaburra's range extends from southern New Guinea and northern Australia to Brisbane in southern Queensland, across the Top End, and down the Western Australian coast as far as Shark Bay.


They live in family groups of up to 12 individuals and are known for their maniacal cackling or barking calls.

The call of the blue-winged kookaburra is a distinctive and loud cackle or barking sound.

A cooperative breeder, the blue-winged kookaburra nests in tree hollows, with a breeding pair assisted by helper birds. They lay three to four white, slightly shiny eggs, and chicks are altricial, requiring extensive care post-hatching.

Their diet varies seasonally, including insects, lizards, frogs, crayfish, scorpions, spiders, fish, earthworms, small birds, and rodents. They are opportunistic and may even snatch insects fleeing from bushfires.

The blue-winged kookaburra is listed as Least Concern on the IUCN Red List of Threatened Species. However, they face predation from red goshawks and rufous owls, and adults are at risk of vehicle collisions. Nests may be raided by olive pythons, quolls, and goannas.

10-10-2001 SYDNEY, AUSTRALIA - EASTERN CATTLE EGRET (Bubulcus ibis ssp. coromandus)


The Eastern Cattle Egret, Bubulcus coromandus, is a member of the heron family Ardeidae, displaying a stout build with a wingspan ranging from 88 to 96 centimeters. It is characterized by its white plumage, which during the breeding season is adorned with buff plumes, and a yellow bill and greyish-yellow legs. The breeding adult is distinguished by its golden nuptial plumes and the buff coloration extending to the cheeks and throat.

This species can be identified by its relatively short, thick neck, sturdy bill, and hunched posture. The non-breeding adult is predominantly white with a yellow bill. During breeding, the buff on the head extends to the cheeks and throat, and the plumes take on a more golden hue. The bill and tarsus are longer than those of its western counterpart, and it is generally smaller with shorter wings.

The Eastern Cattle Egret favors drier and open habitats more than other heron species. Its preferred environments include seasonally inundated grasslands, pastures, farmlands, wetlands, and rice paddies.

Native to southern and eastern Asia, and Australasia, this species has expanded its range remarkably, partly due to its symbiotic relationship with cattle and other large grazing mammals. It has established itself in the north and east of Australia and regularly visits New Zealand.

The Eastern Cattle Egret is often seen in the company of cattle or other large mammals, taking advantage of the insects and small vertebrates these animals disturb. Some populations are migratory, while others disperse after breeding, showing a remarkable adaptability in their movements.

10-10-2001 BLUE MOUNTAINS NSW, AUSTRALIA - EASTERN GREY KANGAROO (Macropus giganteus)


The eastern grey kangaroo (Macropus giganteus: gigantic large-foot; also great grey kangaroo or forester kangaroo) is a marsupial found in the eastern third of Australia, with a population of several million. Although a large M. giganteus kangaroo male can typically weigh up to 69 kg (152 lb) and have a length of well over 2 m (6 ft 7 in),the scientific name is misleading as the red kangaroo of the semi-arid inland is larger, weighing up to 90 kg (200 lb).
The eastern grey kangaroo was described by George Shaw in 1790 as Macropus giganteus.


Although the red is better known, the eastern grey is the kangaroo most often encountered in Australia, due to its adaptability. Few Australians visit the arid interior of the continent, while many live in and around the major cities of the southern and eastern coast, from where it is usually only a short drive to the remaining pockets of near-city bushland where kangaroos can be found without much difficulty. The eastern grey prefers open grassland with areas of bush for daytime shelter and mainly inhabits the wetter parts of Australia. It also inhabits coastal areas, woodlands, sub-tropical forests, mountain forests, and inland scrubs.


Like all kangaroos, it is mainly nocturnal and crepuscular, and is mostly seen early in the morning, or as the light starts to fade in the evening. In the middle of the day, kangaroos rest in the cover of the woodlands and eat there but then come out in the open to feed on the grasslands in large numbers.The eastern grey kangaroo mainly graze a wide variety of grasses[ compared to other species (e.g. the red kangaroo) that also include significant amounts of shrubs in their diet.


Eastern grey kangaroos are gregarious and form open-membership groups. The groups contain an average of three individuals. Smaller groups join to graze in preferred foraging areas, and to rest in large groups around the middle of the day. They exist in a dominance hierarchy and the dominant individuals gain access to better sources of food and areas of shade. However, kangaroos are not territorial. Eastern grey kangaroos adjust their behaviour in relation to the risk of predation with reproductive females, individuals on the periphery of the group and individuals in groups far from cover being the most vigilant. Vigilance in individual kangaroos does not seem to significantly decrease when the size of the group increases. However, there is a tendency for the proportion of individuals on the periphery of the group to decline as group size increases. The open membership of the group allows more kangaroos to join and thus provide more buffers against predators.

10-10-2001 AUSTRALIA - KOALA BEAR (Phascolarctos cinereus)


The koala or, inaccurately, koala bear (Phascolarctos cinereus), is an arboreal herbivorous marsupial native to Australia. It is the only extant representative of the family Phascolarctidae and its closest living relatives are the wombats. The koala is found in coastal areas of the mainland's eastern and southern regions, inhabiting Queensland, New South Wales, Victoria, and South Australia. It is easily recognisable by its stout, tailless body and large head with round, fluffy ears and large, spoon-shaped nose. The koala has a body length of 60–85 cm (24–33 in) and weighs 4–15 kg (9–33 lb). Fur colour ranges from silver grey to chocolate brown. Koalas from the northern populations are typically smaller and lighter in colour than their counterparts further south. These populations possibly are separate subspecies, but this is disputed.


The koala's range covers roughly 1,000,000 km2 (390,000 sq mi), and 30 ecoregions. It ranges throughout mainland eastern and southeastern Australia, including the states of Queensland, New South Wales, Victoria, and South Australia. The koala was introduced to several nearby islands. The population on Magnetic Island represents the northern limit of its range.

Fossil evidence shows that the koala's range stretched as far west as southwestern Western Australia during the late Pleistocene. They were likely driven to extinction in these areas by environmental changes and hunting by Indigenous Australians.  Koalas were introduced to Western Australia at Yanchep in 1938 but that population was reduced to 4 individuals by 2022. Koalas can be found in both tropical and temperate habitats ranging from dense woodlands to more spaced-out forests. In semi-arid climates, they prefer riparian habitats, where nearby streams and creeks provide refuge during times of drought and extreme heat.

Monday, 1 October 2001

1-10-2001 SYDNEY, AUSTRALIA - LAUGHING KOOKABURRA (Dacelo novaeguineae)


The Laughing Kookaburra (Dacelo novaeguineae) is a robust member of the kingfisher family, known for its iconic laughter-like call. It has a white or cream-colored head adorned with a dark brown eye-stripe, while its upperparts are predominantly dark brown with a distinctive mottled light-blue patch on the wing coverts. The underparts are cream-white, and the tail is barred with rufous and black. Both male and female exhibit similar plumage.

This largest kingfisher species can be identified by its hefty bill, prominent brown eyes, and the unique pattern of its plumage. The male and female are similar in appearance, though the female is generally larger. The heavy bill is black on top and bone-colored on the bottom, and the bird has a dark eye-stripe that sets it apart from the blue-winged kookaburra.

The Laughing Kookaburra is found in a variety of habitats including dry eucalypt forests, woodlands, city parks, and gardens. It requires tree holes for nesting and is often seen in areas where the understory is open or grassy.

Native to eastern mainland Australia, the species has been introduced to parts of New Zealand, Tasmania, and Western Australia. It occupies territories throughout the year and is considered sedentary.

Laughing Kookaburras live in family groups, defending their territories with their laughter-like calls. They are monogamous, often retaining the same partner for life, and may be accompanied by offspring from previous years who assist in territory defense and raising young.

The bird's call is a distinctive laugh, used to establish territory and often performed in chorus at dawn and dusk. The call is a complex production, with the bird capable of producing two frequencies at once. It is a learned behavior, with young birds taught by the breeding pair.

1-10 2001 SYDNEY, AUSTRALIA - SHORT BEAKED ECHIDNA (Tachyglossus aculeatus)

The short-beaked echidna (Tachyglossus aculeatus), also called the short-nosed echidna, is one of four living species of echidna, and the only member of the genus Tachyglossus, from Ancient Greek ταχύς (takhús), meaning "fast", and γλῶσσα (glôssa), meaning "tongue". It is covered in fur and spines and has a distinctive snout and a specialised tongue, which it uses to catch its insect prey at a great speed. Like the other extant monotremes, the short-beaked echidna lays eggs; the monotremes are the only living group of mammals to do so.

The short-beaked echidna has extremely strong front limbs and claws, which allow it to burrow quickly with great power. As it needs to be able to survive underground, it has a significant tolerance to high levels of carbon dioxide and low levels of oxygen. It has no weapons or fighting ability but deters predators by curling into a ball and protecting itself with its spines. It cannot sweat or deal well with heat, so it tends to avoid daytime activity in hot weather. It can swim if needed. The snout has mechanoreceptors and electroreceptors that help the echidna to detect its surroundings.

During the Australian winter, it goes into deep torpor and hibernation, reducing its metabolism to save energy. As the temperature increases, it emerges to mate. Female echidnas lay one egg a year and the mating period is the only time the otherwise solitary animals meet one another; the male has no further contact with the female or his offspring after mating. A newborn echidna is the size of a grape but grows rapidly on its mother's milk, which is very rich in nutrients. By seven weeks baby echidnas grow too large and spiky to stay in the pouch and are expelled into the mother's burrow. At around six months they leave and have no more contact with their mothers.

The species is found throughout Australia, where it is the most widespread native mammal, and in coastal and highland regions of eastern New Guinea, where it is known as the mungwe in the Daribi and Chimbu languages. It is not threatened with extinction, but human activities, such as hunting, habitat destruction, and the introduction of foreign predatory species and parasites, have reduced its abundance in Australia.

1-10-2001 SYDNEY, AUSTRALIA - SOUTHERN HAIRY NOSED WOMBAT (Lasiorhinus latifrons)


The southern hairy-nosed wombat (Lasiorhinus latifrons ) is one of three extant species of wombats. It is found in scattered areas of semiarid scrub and mallee from the eastern Nullarbor Plain to the New South Wales border area. It is the smallest of all three wombat species. The young often do not survive dry seasons. It is the state animal of South Australia.

Among the oldest southern hairy-nosed wombats ever documented were a male and a female from Brookfield Zoo just outside Chicago. Their names were Carver, who lived to be 34, and his mother, Vicky, who lived to be 24. In South Australia in 2010, a domesticated wombat named Wally was also reported as having reached the age of 34. Hamlet, a wombat at the Toronto Zoo, similarly died at age 34.

Southern hairy-nosed wombat is a clumsy and plump marsupial with a charming face, large nose and small, bright eyes. Due to having adapted to harsh environment and a specific lifestyle, this animal is able to live on its nutrient-poor diet of grasses. One of 3 wombat species, this animal is distinguished from other 2 species of the family by relatively smaller body, longer ears, more reddish fur as well as shorter and more pointed muzzle, exhibiting white hairs around the nose.

Thursday, 1 April 1999

1-4-1999 IGUAZU, ARGENTINA - SIDE STRIPED SKIMMER DRAGONFLY (Orthemis aequilibris)

The Side-striped Skimmer (Orthemis aequilibris) is a species of dragonfly belonging to the genus Orthemis, commonly known as Tropical King Skimmers. Males of the genus are often red, while females are brown. This species, Orthemis aequilibris, was described by Calvert in 1909 and is a member of the family Libellulidae, the skimmers.  

Classification: 

Kingdom: Animalia

Phylum: Arthropoda

Class: Insecta

Order: Odonata (Dragonflies and Damselflies)

Family: Libellulidae (Skimmers)

Genus: Orthemis (Tropical King Skimmers)

Species: Orthemis aequilibris

Key Characteristics: 

It is a large dragonfly species.

Males are typically red, while females are brown.

Where it's found: 

As a member of the Orthemis genus, Orthemis aequilibris is a Neotropical species. Observations of this dragonfly have been made in various locations in South America, including Brazil.

1-4-1999 IGUAZU, ARGENTINA - SURUCURA TROGON (Trogon surrucura)


The Surucua trogon (Trogon surrucura) is a species of bird in the family Trogonidae, the quetzals and trogons. It is found in Argentina, Brazil, Paraguay, and Uruguay.

The nominate subspecies of Surucua trogon is found from eastern Paraguay and northeastern Argentina east into Uruguay and in Brazil as far north as southeastern Tocantins. T. s. aurantius has a more restricted range in east central and eastern Brazil from Bahia south to São Paulo state. They inhabit the mid levels of primary and well-developed secondary forest and semideciduous woodland. T. s. aurantius often associates with bamboo. T. s. surrucura occurs as high as 1,150 m (3,800 ft) in Bahia, 1,550 m (5,100 ft) in Minas Gerais, and higher still in Rio de Janeiro state. T. s. aurantius occurs up to about 2,000 m (6,600 ft). 

1-4-1999 IGUAZU, ARGENTINA - GREEN HEADED TANAGER


The green-headed tanager (Tangara seledon) is a brightly colored bird found in the Atlantic forest in south-eastern Brazil, far eastern Paraguay, and far north-eastern Argentina (Misiones only).

As other members of the genus Tangara, it is a small colorful bird, measuring an average of 13.5 centimeters (5.3 in) and a mass of 18g (0.6 oz). The green-headed Tanager has a greenish or bluish head, black on the back, and a contrastingly colored, orange or red rump. Females and juvenile birds have similar, though duller coloration. While essentially a bird of humid forests, it is also common in orchards and parks, where it moves through the canopy, making itself inconspicuous, as its apparently flashy blue-green coloration camouflages it well amongst the foliage. 

1-4-1999 IGUAZU, ARGENTINA - SPOT BILLED TOUCANET (Selenidera maculirostris)


The spot-billed toucanet (Selenidera maculirostris) is a near-passerine bird in the toucan family Ramphastidae. It is found in Argentina, Brazil, and Paraguay.
The spot-billed toucanet is 33 to 37 cm (13 to 15 in) long and weighs 137 to 193 g (4.8 to 6.8 oz). Males and females have the same bill pattern but the female's bill is shorter. The bill has a thin vertical black line at its base. The bill is mostly ivory at the base to greenish-yellow at the tip. The middle of the culmen is black, the maxilla has three to five vertical black stripes, and the mandible has a black patch near the end. Both sexes have bare green-yellow to blue skin arond the eye and a golden-yellow tuft of feathers behind it; both are paler in the female. Adult males have a black head, nape, chin, throat, and belly. Their upperparts are green with a yellow band on the lower neck. Their tail is green with chestnut tips on the central three pairs of feathers. Their flanks are yellow and their undertail coverts are red. Females have chestnut to cinnamon-rufous where the male has black. Immatures are duller overall, usually without a yellow band on the back, and their bill's pattern is not sharp.
 

1-4-1999 IGUAZU, ARGENTINA - GUIANAN SQUIRREL (Sciurus aestuans)


The Brazilian squirrel (or Guianan squirrel) (Sciurus aestuans) is a tree squirrel in the genus Sciurus endemic to South America. It is found in South-eastern Colombia, Brazil, Guyana, French Guiana, Suriname and Venezuela.

It is a dark brown squirrel that feeds mainly on fruits and nuts, but can also prey on eggs and the young of birds.

1-4-1999 IGUAZU, ARGENTINA - SOUTHERN MONARCH BUTTERFLY (Danaus erippus)


Danaus erippus, the southern monarch, is a milkweed butterfly (subfamily Danainae) in the family Nymphalidae. It is one of the best known butterflies in South America. Its genome is nearly identical to D. plexippus, but the two are incompatible, and therefore considered separate species.

Though, not as well known as the eastern North American monarch migratory phenomenon, it has been observed to move in a consistent spring/autumn manner by flying south in the autumn towards colder latitudes for the winter.Massive overwintering roosts have not yet been found.

1-4-1999 IGUAZU, ARGENTINA - PLUSH CRESTED JAY (Cyanocorax chrysops)

The plush-crested jay (Cyanocorax chrysops) is a jay of the family Corvidae (which includes the crows and their many allies). It is found in central-southern South America: in southwestern Brazil, Bolivia, Paraguay, Uruguay, and northeastern Argentina, including southern regions of the Amazon Basin river systems bordering the Pantanal.

It is an elegant medium-sized bird, dark plumaged with a cream-yellow breast; the bulky tail is also cream colored, top and underneath, for the lower half.


The range of the plush-crested jay extends from the Southern Region, Brazil with Uruguay and approaches the South Atlantic coast, but avoids the coast, approximating a 400 to 150 km coastal strip; the coastal-inland range extends 3500 km from São Paulo south to Rio Grande do Sul bordering Uruguay. The inland range continues in northwestern Uruguay and extends northwest through northern Argentina, Paraguay–Bolivia, and through the Pantanal at the southern Cerrado; the range extends in two arms, to the northwest to northern Bolivia, and northeastwards to headwaters of the Amazon Basin Tapajós River.

In the Amazon Basin, central Bolivia is the northwest range limit, the headwater tributaries to the north-northeast flowing Madeira River; the next range skips the Guaporé River, (a northwest-flowing tributary to the Madeira), eastwards on the Brazil–Bolivia border, and is next found at the headwaters of the Tapajós River, and joins on the east the extreme headwaters of the Xingu River.

A disjunct range occurs downstream on the Tapajós and east towards the Xingu River, a block 850 by 750 kilometres (530 mi × 470 mi). Two other localized populations occur in the Amazon Basin, one on the Amazon River, the other on the downstream Madeira River. 

1-4-1999 IGUAZU, ARGENTINA - GUIRA CUCKOO (Guira guira)

The guira cuckoo (Guira guira) is a gregarious bird found widely in open and semi-open habitats of northeastern, eastern and southern Brazil, Uruguay, Paraguay, Bolivia, and northeastern Argentina. It is the only species placed in the genus Guira.

The guira cuckoo is a bird of open habitats such as pastures and wetlands, and its range has expanded significantly due to deforestation. Within its distribution, it is commonly seen in suburban parks and gardens.

Like the related squirrel cuckoo, the guira cuckoo is not a particularly adept flier, and usually flies only for short distances. It is often seen gliding or hopping from one perch to another while vocalizating loudly.

Although it is primarily an arboreal bird, it is often seen foraging on the ground, sometimes alone but often in flocks of up to 18 individuals. It is sometimes seen with other birds whose behaviour is similar, such as the smooth-billed ani. Unlike many of the Old World cuckoos, the guira cuckoo does not practice brood parasitism or kleptoparasitism. 

1-4-1999 IGUAZU, ARGENTINA - BLUE NAPED CHLOROPHONIA


The blue-naped chlorophonia (Chlorophonia cyanea) is a colourful South American species of bird in the family Fringillidae; it was formerly placed in the Thraupidae. It is generally fairly common.

A small, plump, mainly green bird. The underparts are yellow, and the mantle/lower nape, rump and eye-ring are blue. Some subspecies have a yellow frontlet. Females are duller than the males, with underparts more greenish-yellow and less blue to the mantle/lower nape.

Its distribution is highly disjunct, with population associated with the Atlantic Forest in south-eastern Brazil, eastern Paraguay and north-eastern Argentina, the Andes from Bolivia in south to Venezuela in north, the Perijá and Santa Marta Mountains, the Venezuelan Coastal Range, and the Tepuis. All populations are associated with humid forest, but locally it also occurs in nearby gardens and parks (especially in the Atlantic Forest region). Most populations are found in subtropical highlands, but it occurs down to near sea level in the Atlantic Forest region.

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 - BLUE MORPHO BUTTERFLY (Morpho achilles)


Morpho achilles, the Achilles morpho, blue-banded morpho, or banded blue morpho, is a Neotropical butterfly.

The genus name Morpho comes from the Greek epithet of Aphrodite, goddess of love. Achilles was a Greek hero of the Trojan War, the central character of Homer's Iliad.

In Morpho achilles patroclus, the dorsal sides of the forewings are black, with two broad vertical bands of brilliant blue. The undersides of the hindwings are olive brownish, with several ocelli formed by blue, yellow, and red concentric rings.

The caterpillars feed on various species of climbing plants (Dalbergia, Inga, Machaerium, Machaerium aculeatum, Myrocarpus, Platymiscium, and Pterocarpus), while the adults mainly feed on rotting fruits or fermenting juice and tree sap.

This species can be found over a huge range of countries, particularly in Argentina, Suriname, Bolivia, Colombia, Peru, Ecuador, Venezuela, Paraguay, and Brazil.

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"

Sunday, 10 August 1997

10-8-1997 SAN FRANCISCO - CALIFORNIA SEALION (Zalophus californianus)


Being sexually dimorphic, California sea lions differ in size, shape, and coloration between the sexes. Males can grow up to 2.5–2.7 m (8.2–8.9 ft) long and weigh around 350 kg (770 lb), while females are typically around 2.1 m (6.9 ft) and weigh around 100 kg (220 lb). The heaviest recorded male weighed 660 kg (1,460 lb). Females and juveniles have a tawny brown pelage, although they may be temporarily light gray or silver after molting. The pelage of adult males can be anywhere from light brown to black, but is typically dark brown. The face of adult males may also be light tan in some areas. Pups have a black or dark brown pelage at birth. Although the species has a slender build, adult males have robust necks, chests, and shoulders. Adult males also have a protruding crest which gives them a "high, domed forehead"; it is tufted with white hairs. They also have manes, which are less developed than those of adult male South American and Steller sea lions. Both sexes have long, narrow muzzles.

As an otariid, the California sea lion relies on its foreflippers to propel itself when swimming. This form of aquatic locomotion, along with its streamlined body, effectively reduces drag underwater. Its foreflipper movement is not continuous; the animal glides in between each stroke. The flexibility of its spine allows the California sea lion to bend its neck backwards far enough to reach its hindflippers. This allows the animal to make dorsal turns and maintain a streamlined posture. When moving on land, the California sea lion is able to turn its hindflippers forward and walk on all fours. It moves the foreflippers in a transverse, rather than a sagittal, fashion. In addition, it relies on movements of its head and neck more than its hindflippers for terrestrial locomotion. California sea lions may travel at speeds of around 10.8 km/h (6.7 mph), and can dive at depths of 274 m (899 ft) and for up to 9.9 minutes, though most dives are typically 80 m (260 ft) and last less than 3 minutes.