Transactions of the Wisconsin State Horticultural Society, Vol. 45 (Classic Reprint)
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BeschreibungExcerpt from Transactions of the Wisconsin State Horticultural Society, Vol. 45
Presenting part of these facts in a little different way still, 43 of the 248 birds had eaten blackberries, 11 raspberries, 33 cherries, 7 currants, 12 grapes and only 5 strawberries. Black berries formed 13 per cent. Of the whole food, raspberries 3} per cent, cherries 855 currants 1, grapes Si and strawberries less than one per cent. From my own experience with these three birds - the robin, cat bird and brown thrush I can say that Prof. Forbes' estimate of the per cent. Of fruits eaten by them is, in my judgment, quite large enough. Do these three species render a sufficient service in destroying insects to pay for the fruits they consume?
In other lines of work you do not expect to have services rendered without due compensation. You board the horse the year through and give him lodging for the services he is able to render; you expect the hired man will pick from the vines some of the berries and eat an apple now and then, and if he is a faithful servant you are glad to see him do so.
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Untertitel: 23:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on White w/Gloss Lam. Sprache: Englisch.
Verlag: Forgotten Books
Erscheinungsdatum: September 2015
Seitenanzahl: 206 Seiten