The semipalmated sandpiper is a very small shorebird. The genus name is from Ancient Greek kalidris or skalidris, a term used by Aristotle for some grey-coloured waterside birds. The specific pusilla is Latin for "very small".
The Baillon's crake, or Marsh crake is a very small waterbird of the family Rallidae.
The Wilson's warbler is a small New World warbler. It is greenish above and yellow below, with rounded wings and a long, slim tail. The male has a black crown patch; depending on the subspecies, that mark is reduced or absent in the female. It breeds across Canada and south through the western United States, and winters from Mexico south through much of Central America. It is a very rare vagrant to western Europe.
The field sparrow is a small New World sparrow in the family Passerellidae. It is about 140 mm (6 in) long and weighs about 12.5 g (0.4 oz). The head is grey with a rust-coloured crown, white eye-ring and pink bill. The upper parts are brown streaked with black and buff, the breast is buff, the belly is white and the tail is forked. There are two different colour morphs, one being greyer and the other more rufous.
The Senegal eremomela is a member of the African warbler family, the Cisticolidae. It occurs in the savannas of western Sub-Saharan Africa.
The flannel moths or crinkled flannel moths are a family of insects. They occur in North America and the New World tropics. The larvae are called puss caterpillars, and with their long hairs, resemble cotton balls. They have venomous spines that can cause a painful sting and inflammation lasting for several days. In some cases, the sting may cause headache, nausea, and shock-like symptoms. Perhaps the most notorious for stinging is the caterpillar of Megalopyge opercularis.
The brown-headed nuthatch is a small songbird found in pine forests throughout the Southeastern United States. Genetic analyses indicated low differentiation between northern and southern populations in Florida. A population on the Bahamas showed moderate to high differentiation compared with Florida populations. The Bahama nuthatch was and still is considered a subspecies by several authorities including the IOC, but the IUCN and BirdLife International have reclassified it as its own separate species. The bird, like other nuthatches, possesses a sharp black nail-like beak, which it uses to pound open seeds. It is a frequent visitor to feeding stations and is highly fond of sunflower seeds and suet cakes.
The brown thornbill is a passerine bird usually found in eastern and south-eastern Australia, including Tasmania. It can grow up to 10 centimetres (3.9 in) long, and feeds on insects. It is brown, gray, and white. The species has five subspecies.
The least big-eared bat is a South American bat species of the family Phyllostomidae, found in northwestern Brazil and eastern Colombia. It is monotypic within its genus.
The southern little yellow-eared bat is a frugivorous bat species from South America. It is found in Brazil, Argentina and Paraguay.
Bettong, species of the genus Bettongia, are potoroine marsupials once common in Australia. They are important ecological engineers displaced during the colonisation of the continent, and vulnerable to the threatening factors such as altered fire regimes, land clearing, pastoralism and the introduced predatory species such as the fox and cat.
The least shrew tenrec is a species of mammal in the family Tenrecidae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, swamps, pastureland, and irrigated land. It is threatened by habitat loss.
The steppe pika is a small mammal of the pika family, Ochotonidae. It is found in the steppes of south Russia and northern Kazakhstan.
Elysia pusilla is a species of small sea slug, a marine gastropod mollusk in the family Plakobranchidae. It is a sacoglossan.
Tectonatica pusilla is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.
Microcladia is a genus of moth in the family Megalopygidae.
Alucita pusilla is a moth of the family Alucitidae. It is found in Japan.
Grindelia pusilla, the little gumweed, is a North American species of flowering plants in the daisy family. It is found only in the state of Texas in the south-central United States.
Microcladia pygmaea is a moth of the family Megalopygidae. It was described by Walter Hopp in 1927.
Kogia pusilla is an extinct species of sperm whale from the Middle Pliocene of Italy related to the modern day dwarf sperm whale and pygmy sperm whale. It is known from a single skull discovered in 1877, and was considered a species of beaked whale until 1997. The skull shares many characteristics with other sperm whales, and is comparable in size to that of the dwarf sperm whale. Like the modern Kogia, it probably hunted squid in the midnight zone, and frequented continental slopes. The environment it inhabited was likely a calm, nearshore area with a combination sandy and hard-rock seafloor. K. pusilla likely died out due to the ice ages at the end of the Pliocene.
