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THE STEINHART AQUARIUM - Gulf of Guinea Science ...

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human inhabited areas.<br />

Description: Small, short-tailed and -legged<br />

bird, length about 10 cm, weight 4 grams. Both<br />

male and female plumage on chest, belly and<br />

upper rump are bright yellow, back and head<br />

are dark gray accenting a striking wide, white<br />

eyebrow stripe and throat. Bill is black, short<br />

and slender, and slightly decurved.<br />

Diet: Primarily nectar feeders, bananaquits<br />

seek small flowers for nectar and use sharp<br />

bill to pierce larger ones when its bill cannot<br />

otherwise reach the nectar. They also suck<br />

juices <strong>of</strong> berries and ripe fruits and nibble<br />

on bananas. Feeds in pairs or solo, short<br />

strong legs and feet allow acrobatic postures<br />

to probe or pierce flowers for nectar, even<br />

feeding upside down. They also pick bark for<br />

small insects. They readily join mixed flocks<br />

<strong>of</strong> tanagers, honeycreepers and warblers at<br />

feeders.<br />

Reproduction and Development: Both<br />

parents, but <strong>of</strong>ten primarily the male, build a<br />

brooding nest and also several roosting nests.<br />

Nest is a compact globe <strong>of</strong> leaves and plant<br />

fibre, lined with seed down, moss, and feathers.<br />

The round entry doorway faces down (to<br />

discourage snakes). Nest is usually 10 -50 feet<br />

up. Two eggs are brown-spotted white, which<br />

the female incubates 12–13 days. Both parents<br />

feed young regurgitated food for 17–19 days.<br />

Their period <strong>of</strong> incubation and feeding young<br />

are unique, as is the shape <strong>of</strong> their nest and<br />

the building <strong>of</strong> adjacent “dormitory” nests,<br />

where they roost or sleep when not actively<br />

incubating. They also have an exceptionally<br />

long breeding season, lasting all year except<br />

from March to May, and <strong>of</strong>ten raise three<br />

broods.<br />

Mortallity/Longevity: Like other small<br />

passerines, vulnerable to hawks, snakes.<br />

Remarks: Banaquits have adapted well to<br />

human impact on the environment. They are<br />

highly sociable and common in inhabited<br />

areas, mixing with other species at feeders<br />

and in gardens and farm areas. People enjoy<br />

their acrobatic stances to get nectar. Unlike<br />

suspended hummingbirds, bananaquits<br />

must get nectar as they grasp twigs. Like<br />

some other small, sharp-billed birds such as<br />

honeycreepers, they pierce the base <strong>of</strong> large<br />

flowers to get nectar their short bills cannot<br />

California Academy <strong>of</strong> <strong>Science</strong>s<br />

reach, thus thwarting the pollination strategy<br />

<strong>of</strong> the flowers.<br />

They communicate with sharp, piercing ‘tsip,’<br />

and have no melodious song.<br />

Their period <strong>of</strong> incubation and feeding young<br />

are unique, as is the shape <strong>of</strong> their nest and<br />

the building <strong>of</strong> adjacent “dormitory” nests,<br />

where they roost or sleep when not actively<br />

incubating. They also have an exceptionally<br />

long breeding season, lasting all year except<br />

from March to May, and <strong>of</strong>ten raise three<br />

broods.<br />

Taxonomically, they have recently become<br />

the only remaining genus in their family, now<br />

considered unique, but that may change again,<br />

as som experts place them in the Thraupidae,<br />

the tanager family.<br />

CLASS MAMMALIA<br />

(MAMMALS)<br />

ORDER CHIROPTERA<br />

(BATS)<br />

Dog-faced Fruit Bat<br />

Cynopterus brachyotis (Pteropodidae)<br />

Fruit Bats<br />

Distribution: Southeast Asia including<br />

Sri Lanka, Andaman and Nicobar Islands,<br />

southern Myanmar, Thailand, southern China,<br />

Indonesia, Malaysia, Philippines and Borneo.<br />

Habitat: Tropical forests and open country.<br />

Roost in caves, deserted mines, under the eaves<br />

<strong>of</strong> buildings, occasionally in hollow trees.<br />

Appearance: Wingspan to ~45 cm; weight to<br />

~100 g. Pelage is dense and variable in color,<br />

but typically olive-brown. Prominent, almost<br />

tubular nostrils. The upper lip is divided by a<br />

vertical groove.<br />

Diet: Fruits <strong>of</strong> many plants, including palms,<br />

figs, guavas, plantains, mangoes, chinaberries<br />

and, occasionally, flowers. Subsist primarily on<br />

fruit juice, little pulp ingested. May travel more<br />

than 100 km in one night to feed.<br />

Reproduction and Development: Gestation<br />

~120 days. Mothers carry their single <strong>of</strong>fspring<br />

during the early part <strong>of</strong> its life.<br />

Mortality/Longevity: Sold in markets in<br />

northern Thailand as “medicine.” Eaten in<br />

227

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