39개의 결과 중 1 - 5개
Instincts comparable with habits, but different in their origin— Instincts graduated
— Aphides and ants— Instincts variable — Domestic instincts, their origin —
Natural instincts of the cuckoo, ostrich, and parasitic bees— Slave-making ante—
I have, also, reason to believe that humble-bees are indispensable to the
fertilisation of the heartsease (Viola tricolor), for other bees do not visit this flower.
From experiments which I have lately tried, I have found that the visits of bees are
The number of humble bees in any district depends in a great degree on the
number of field-mice, which destroy their combs and nests ; and Mr. H. Newman?
who has long attended to the habits of humble-bees, believes that " more than
The weather had been cold and boisterous, and therefore not favourable to bees,
nevertheless every female flower which I examined had been effectually fertilised
by the bees, accidentally dusted with pollen, having flown from tree to tree in ...
I could give many facts, showing how anxious bees are to save time ; for instance
, their habit of cutting holes and sucking the nectar at the bases of certain flowers,
which they can, with a very little more trouble, enter by the mouth. Bearing such ...
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