Physicological implications of dating a younger man

Hartman and Oring (2003) studied the importance of nest orientation to nest microclimate in Horned Larks in California.

Nests showed a significant northern bias in orientation angle and were 49% shaded in the early afternoon, the hottest part of the day.

The dashed circle represents the outline of a nest.

Each individual curved black bar represents the vegetation around one nest.



This indicates that the even the earliest birds built nests to protect their eggs and young (From: Chiappe 2009). Cornell Lab of Ornithology, Ithaca, NY; Retrieved from the Birds of North America Online: Scharf, W.

Orientation and microclimate of Horned Lark nests -- Across their range, Horned Larks typically construct nests adjacent to & north of objects such as a tuft of grass or a rock.


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