Describes the appearance of a male and female cardinal, their mating and feeding habits, the process of raising their young, and dangers which threaten them during one year.
Describes the complete cycle of a swallowtail butterfly: mating, laying eggs, hatching out as a caterpillar, formation of the chrysalid and transformation to a butterfly.
Describes the complete cycle of a swallowtail butterfly: mating, laying eggs, hatching out as a caterpillar, formation of the chrysalid and transformation to a butterfly.
Describes the many kinds of caterpillars, their life cycle, struggle for survival, and role in man's economy. Includes a chapter on raising caterpillars.
Discusses conditions affecting populations of various species, causes and effects of animal explosions and invasions, man's influence on animal populations, and the problems of expanding human population.