The effects observed both in the white-crowned sparrow example and the chick example give rise to a number of questions.
The sparrow who has taken to a similar form of existence is equally despicable.
In the same way, the (humanizing) immigrant metaphor organizes our view of the sparrow.
Thus, the distance between a sparrow and a kestrel is 4.
The classic model of song learning outlined above was obviously contradicted; this song somehow got stored, in spite of its dissimilarity to white-crowned sparrow song.
From this perspective, the song of a sparrow will, on average, articulate a comparable message to any other sparrow, and perhaps even to other animals.
Then the press was suddenly awash with stories about the dramatic sudden decline in sparrow numbers, from traditional urban haunts to suburbia and the countryside.
A sparrow will not show the "begging" behavior again once adult, but humans, by contrast, retain the capacity to cry throughout their lives.
