Quelili—Collectors were remorseless in their pursuit of the quelili, and the last examples of this Guadalupe caracara were seen in 1901.
Two hundred and forty miles off the northwest coast...
Family: Mangrove Gerygone (Gerygone levigaster) belongs to the Australian Warbler family Acanthizidae
Identification: Both adult sexes are alike. The...
Centrifuge Machine
A typical centrifuge machine consists of a motor, a rotating assembly (also known as a rotor), and a control system. The motor provides...