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Of the various items birds use to line their nests, down feathers provide the most effective insulation, though only when dry; wet down is the least effective insulator. [12] Down may also help camouflage the eggs when the female is away from the nest, particularly as the birds often draw the feathers over their eggs before leaving.
Bead maze. A bead maze or bead roller coaster is a children's toy.Bead mazes feature a wooden base with brightly-colored rigid wires strung from one side of the base to the other, often in intricate tracks that loop and intertwine with one another.
Child solving wooden puzzle. Jigsaw puzzles geared towards children typically have significantly fewer pieces and are typically much larger. For very young children, puzzles with as few as 4 to 9 large pieces (so as not to be a choking hazard) are standard. They are usually made of wood or plastic for durability and can be cleaned without damage.
Down feathers are fluffy because they lack barbicels, so the barbules float free of each other, allowing the down to trap air and provide excellent thermal insulation. At the base of the feather, the rachis expands to form the hollow tubular calamus (or quill) which inserts into a follicle in the skin. The basal part of the calamus is without ...
Liberty Puzzles was founded in 2005 by Christopher Wirth and his business partner Jeffrey Eldridge, after Wirth’s family inherited several hand-cut wooden puzzles from the 1930s. [1] Surprised by the value of hand-cut wooden jigsaw puzzles (which can sell for more than $1,000 each), Wirth decided to start a business using modern cutting ...
A few years ago, Maria McNamara was invited to Brussels by fellow paleontologist Pascal Godefroit and presented with an intriguing opportunity.
Wooden mask in form of a chicken. Bali , late 20th century The nature writers Mark Cocker and Richard Mabey , reviewing people's love of birds, observe that people are touched by feelings for birds in a variety of ways, such as enjoying the lapwing's "joyous display", [ 59 ] or the "beauty and mystery" of the tawny owl's call on a cold winter's ...
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