. Animal activities; a first book in zoo?logy. Zoology; Animal behavior. MATERML FOR STUDY. 23 For Aquaria. Hydroids, hydras, and jelly-fish for the most part die off in win- ter, but sea-anemones, starfish, hermit-crabs, shrimps, and cray- fish can all be obtained through- out the year. Snails and mussels are also easily kept at all times, as are also tadpoles and frogs. In the spring the eggs of frogs and toads should be placed in aquaria and watched. Birds. Winter is the best time to begin the out- door study of birds. Familiarity with the birds which remain north throughout the winter prev
. Animal activities; a first book in zoo?logy. Zoology; Animal behavior. MATERML FOR STUDY. 23 For Aquaria. Hydroids, hydras, and jelly-fish for the most part die off in win- ter, but sea-anemones, starfish, hermit-crabs, shrimps, and cray- fish can all be obtained through- out the year. Snails and mussels are also easily kept at all times, as are also tadpoles and frogs. In the spring the eggs of frogs and toads should be placed in aquaria and watched. Birds. Winter is the best time to begin the out- door study of birds. Familiarity with the birds which remain north throughout the winter prevents much of Fig. 33-—Eggs of Frog just Fig. 34.—Eggs of Frog a Few Hours after Laying. the confusion which so annoys the novice when he tries to observe the newcomers at the time of the spring migration. A study of crows, blue jays, and chicka- dees, during cold weather should form a part of the work for winter. English sparrows must not be despised as objects of study, and their habits, both in captivity and out of doors, should be Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original French, Nathaniel Stowers, 1854-. New York [etc. etc. ] Longmans, Green and Co
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