Skip to main content

Featured

Russet-winged Schiffornis (Schiffornis stenorhyncha)

Russet-winged Schiffornis is one of five species that formerly were united under the name Thrush-like Schiffornis (Schiffornis turdina); the other members of this group are Northern Schiffornis (S. veraepacis), Olivaceous Schiffornis (S. olivacea), Foothill Schiffornis (S. aenea), and Brown-winged Schiffornis (S. turdina). 

Russet-winged Schiffornis is a representative of this group that occurs from central Panama east across northern Colombia to western and northern Venezuela. All species in this group have similar, dull plumages, being primarily brown or olive brown, with paler underparts, and prominent large dark eyes. Although all members of the group also are poorly known, Russet-winged Schiffornis probably is one of the least studied members of the complex. This is a relatively low density species that occupies the understory of terra firme forests, most often foraging within 1-2 m of the ground, and typically is solitary. The clear whistled song is heard far more often than th…

Featured Species: Tent-making Bat (Uroderma bilobatum)



Tent-making Bats (Uroderma bilobatum)

This Tent-making Bat (Uroderma bilobatum) is found in the lowland forests of Central and South America, from southern Mexico to southeastern Brazil. This medium-sized bat has gray coat with a pale white stripe running down the middle of the back. Its face is characterized by four white stripes and a fleshy noseleaf. It feeds mainly on fruits, but can supplement its diet with insects, parts of flowers, pollen and nectar.


Tent-making Bats (Uroderma bilobatum)

Its common name comes from its behavior of building tents on large leaves of such plants as bananas or palms. They bite through the veins of the leaf so that it bends to form an inverted V-shaped shelter. This "tent" offers shelter from the sun, wind and rain, where they hang upside down.



Tent-making Bats (Uroderma bilobatum) may roost in groups of 2 to 10 individuals, although colonies of up to 60 have been known.

Tent-making Bats (Uroderma bilobatum) - female with young

Female tent-making bats may reproduce twice in one year. In Panama, pregnant females have been observed in February and in June. Each litter consists of only one pup, which is born after a gestation period of 4–5 months. The nursing females form maternity colonies of 20–40 individuals in one tent roost. Roosting in groups may have thermoregulation benefits for the pups and lactating mothers. They do not carry their young with them on their nightly foraging flights; however, it appears that they may first move their pups to more protected roosts before beginning to forage. The pups become independent after one month.


Tent-making Bats (Uroderma bilobatum)

There's a coevolution of a group of flies that have become parasitic on these mammals. Bat flies live in the fur and on the wing membranes of bats, feeding periodically on blood.


Tent-making Bats (Uroderma bilobatum)




Comments

Post a Comment

Popular Posts