...The female sitsvery close when incubating and willnot fly until almost trod upon,trusting to her variegated markingsto conceal her from observation... 
Chester A. Reed 「The Bird Book」
...
General Greely found them nesting in Grinnell Land in July, the malesdoing most of the incubating as is customary in the plover family,whose females certainly have advanced ideas...
Neltje Blanchan 「Birds Every Child Should Know」
...General Greely found them nesting in Grinnell Land in July, the malesdoing most of the incubating as is customary in the plover family,whose females certainly have advanced ideas...
Neltje Blanchan 「Birds Every Child Should Know」
...Spanish, Polish, and Hamburgh hens have lost the incubating instinct...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The hen rests her chin on the lower part of this whileshe is incubating her eggs, and thus is able, as she sits, tosee what is going on in the great world without...
Douglas Dewar 「A Bird Calendar for Northern India」
...Sosmall is the nursery that sometimes the incubating bird looks asthough it were sitting across a branch...
Douglas Dewar 「A Bird Calendar for Northern India」
...He isof opinion that the incubating birds treat the eggs thus inorder to prevent their getting sun-baked...
Douglas Dewar 「A Bird Calendar for Northern India」
...Another bird which is now incubating eggs on the ground is thedid-he-do-it or red-wattled lapwing (Sarcogrammus indicus)...
Douglas Dewar 「A Bird Calendar for Northern India」
...In the course of a railway journey in August numbersof incubating saruses may be seen by any person who takes thetrouble to look for them...
Douglas Dewar 「A Bird Calendar for Northern India」
...A fewblack-necked storks do not lay until November; thus there isalways the chance of coming upon an incubating stork in thepresent month...
Douglas Dewar 「A Bird Calendar for Northern India」
...What was lackingto this egg, that it should fail to produce a grub? Perhaps a bath ofsunlight; the incubating heat of which the outer egg has robbed it...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...When the male was almost one foot from the nest the incubating female left...
Glen E. Woolfenden 「Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima」
...The robin was disturbed at first, but soon wenton with her incubating in the new and more exposedposition...
John Burroughs 「Ways of Nature」
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