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In bird flight aerodynamics, the area of interest is the total wing area, that is, the area of both wings plus the area of the intervening portion of the body known as the "root box". [10] The root box is estimated from a measurement of the wing width at the base (the root chord ) and the difference between the wingspan and two times the extent ...
Lawrence Zeleny (April 30, 1904 — May 27, 1995), was an American biochemist most notable for his founding of the North American Bluebird Society in 1978. During his 30-year career with the U.S. Department of Agriculture, he noticed a decline in the numbers of bluebirds .
130 m high. Span reported by NABS. [27] 23: Wrather Arch: United States, Arizona, Wrather Canyon: 54.9: 180: NABS states that the span cannot be more than 180 ft (54.9 m) based on a related measurement made in 2008, though the span has not yet been measured precisely according to NABS standards. An earlier non-NABS estimate was 246 ft (75.0 m ...
At the time the 3800 ended production in 2004, the number of full-size body manufacturers from 1979 had decreased from eight to three (Blue Bird, Thomas, and IC, the successor to AmTran/Ward); International was the sole remaining chassis manufacturer (following the exit of Ford and GM, Freightliner and Blue Bird commenced production of cowled ...
The eastern bluebird (Sialia sialis) is a small North American migratory thrush found in open woodlands, farmlands, and orchards.. The bright-blue breeding plumage of the male, easily observed on a wire or open perch, makes this species a favorite of birders.
To calculate this dimension for a fractal , imagine this fractal lying on an evenly spaced grid and count how many boxes are required to cover the set. The box-counting dimension is calculated by seeing how this number changes as we make the grid finer by applying a box-counting algorithm.
Eggs are 14–18 mm (0.55–0.71 in) long and 10.7–13.5 mm (0.42–0.53 in) wide. Egg size appears to depend mostly on the size of individual females and secondarily on habitat, with smaller eggs found at higher altitudes. The clutch's total weight can be 1.5 times as heavy as the female bird. [22] Juvenile in Pimlico, London
The Blue Bird Micro Bird is a bus body produced in the United States and Canada by Blue Bird Corporation. First introduced in 1975, the Micro Bird body is combined with a cutaway van chassis, with passenger capacity ranging from 10 to 30 passengers. [ 1 ]