Hummingbirds Research Paper

1032 Words 5 Pages
There is a great diversity of bird here on Earth; some are swift fliers, others cannot fly at all, while others are brightly colored or incredibly tiny. The smallest bird known to man is almost insect sized and a species of hummingbird. Hummingbirds are a fascinating variety of bird as they lay the world’s smallest bird eggs and most weigh less than an ounce, however, they are little but powerful, with records of up to 45 mph speed and the ability to cross the Gulf of Mexico, a nonstop 20-hour travel. These miniature birds known as hummingbirds due to the sound that their wings produce in flight is part of the avian family Trochilidae. There are many distinctive shared derived characteristics of hummingbirds, such as their dazzling gorgets, …show more content…
One of their unique traits is their long curved bills, with red or yellow coloring on the lower bill, that allows hermits to drink nectar from flowers that other hummingbirds cannot reach (Johnson). So although hummingbirds as a family are already specified to feed from certain flowers only, there is further specialization in members of the same genus and even within species. It is important to think about hummingbirds because they play the important role of pollination for many flower species and help to determine the variety and abundance of plant species in the …show more content…
There were approximately 16 males and 13 females observed for each of the 30 species of hummingbirds collected. Each hummingbird was measured for the length in millimeters of the exposed culmen (top part of bill), total bill (bill tip to gape or end of bill), arc length of exposed culmen, and wing cord (wing length when held at 90 degree angle). Equation R=(C/2)/sinA was used to mathematically compare bill curvature, R = radius, C = length of culmen, A = angle of declension measured using a circular protractor. To quantify sexual dimorphism, the researchers used Lovich – Gibbons two-step ratio using species averages, s.d. = (L/S-1) x (+/-1), with L = average size of the larger sex and S = average size of the smaller sex (Temeles, Miller, and

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