Sample Marine Lesson

Long-legged Wading Birds

Objective
The student will be able to convert standard and metric measurements.

Vocabulary
bay
estuary
pond
stream

Background
Herons and egrets are among the tallest birds found along the coast. Some are associated almost exclusively with saltwater bays and estuaries. Others are more often found around freshwater ponds, streams, and rice fields. A few are found in both types of habitats. They are large wading birds with long-necks, long legs, and dagger-like bills. They generally feed on fishes, snakes, frogs, and crayfish.

Exercises
Fill in the missing parts of the table below. Use 1 inch = 2.54 centimeters for conversions.

Species	Height (in)	Height (ft, in)	Height (cm)	Height (m)
Great blue heron	52	_____	_____	_____
Great white heron	52	_____	_____	_____
Green heron	22	_____	_____	_____
Little blue heron	29	_____	_____	_____
Cattle egret	20	_____	_____	_____
Reddish egret	29	_____	_____	_____
Common egret	40	_____	_____	_____
Snowy egret	27	_____	_____	_____
Tricolored heron	26	_____	_____	_____
Black-crowned night heron	28	_____	_____	_____
Yellow-crowned night heron	28	_____	_____	_____

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