Image from the Biodiversity Heritage Library.
Contributed by Harvard University, Museum of Comparative Zoology, Ernst Mayr Library.
| www.biodiversitylibrary.org
Transcription
Cyanocitta cristata.
Lake Umbagog, Maine.
1895. At 7 A.M. a flock of 17 Blue Jays started from the woods
Sept.21. on the Point and rose to a height of fully 2000 feet going up
in a spiral course of about half-a-mile in width and making
only one and one half turns during the ascent. They then
started off towards the south-west flapping steadily until
they faded out of sight in the distance. An hour later a
flock of fourteen came over the Point at a height of about
200 feet and setting their wings came huriling down precisely
like those seen yesterday. The sound they made was so loud
that Jim Bernier who was lying in his tent came running out
thinking, as he said, that a flock of Sooters must be pitch-
ing down into the lake. I am puzzled by these evolutions.
What do they mean? Apparently the flock of 17 were starting
on migration. Did some of them return or were the 14 birds
another lot? If the latter why should one flock start on mi-
gration and another end a journey at nearly the same hour?
On all these occasions the Jays, unlike migrating Crows, have
been severely silent. Not a single scream did I hear either morning.