|
10 Sep-7 Nov 2012 -
Art was the first of our adults to head south
this year.
He was very efficient and is showing us what we've seen
in a lot of other adults. Once they get to South
America, they will often take off on a straight
line for their target destination. Because this
is the first year we've followed Art, we don't
know where he's going, but he does.
We thought he might have reached his winter home when
he got to the Amazon on the 18th, but he kept
right on going and has now gone farther
southeast through Brazil than any bird we have
followed to date.
It looks like he's settled down for the winter near the
confluence of the Rios Tocantins and Araguaia.
Scroll down to see all his maps for the summer
(lots of interesting observations of his hunting
patterns) or...
Skip
ahead to the start of migration.
Skip to south of the Caribbean. |
|
29 May-11 June 2012 -
Art was tagged at his nest along the
Pemigewasset River in the Lakes District of
central New Hampshire. The Pemigewasset becomes
the Merrimack below the confluence with the
Winipesaukee (New England does have the best
place names of anywhere!) |
|
13-18 June 2012 -
Art doesn't seem to be having any problem
catching fish to feed his single young. He
spends a lot of time around the nest, and is
fishing mostly in Little Squam Lake and at the
rather tiny Sky Pond southeast of his nest. |
|
18-25 June 2012 -
From here on, we'll look at weekly snapshots of
where Art is fishing. This week it's still
Little Squam and Winona Lakes, Sky Pond, and a
fair bit of time up the Pemigewasset River above
his nest. |
|
26 June-3 July 2012 -
Most of his fishing was along the river this
week. Not trips recorded to Little Squam. We do
have to remember that because we only get hourly
locations for him, it's possible that he could
have flown over to Little Squam, caught a fish,
and been back to his nest in less than an hour,
which, as long as he left shortly after his
hourly location, wouldn't show up on our maps. |
|
4-10 July 2012 -
Art made his first trip down to Lake
Waukewan, and didn't fish Sky Pond for the first
time (at least he wasn't there for an hourly
location). |
|
11-17 July 2012 -
Local fishermen report that as the water is
warming up, trout are seeking deeper, cooler
waters, which puts them out of the reach of an
Osprey, which can only catch fish near the water
surface (they can go down about a meter/yard).
The cluster of points on the "Pemi" north of his
nest is a big, broad expanse of rapids that
seems to have attracted his attention. |
|
17-23 July 2012 -
No more trips down to Sky Pond or Winona L.
Little Squam still seems to be productive, as
are the rapids north of his nest. He's also
found a spot he likes on the Baker River about
11 miles (17 km) from his nest. |
|
June-July 2012 -
Here's a bit of a different way to look at the
data. We're just focusing on the paths that
connect the hourly locations. What jumps out
from this map is that almost all his trips from
the nest lasted less than two hours and were to
a single destination. When we see him go out to
a pond and then straight back to the nest, we
can assume that it was a successful trip.
Sky Pond is only 5 miles (8 km) from his nest, and
Little Squam even closer, so Art's found
himself a very productive location for his nest. |
|
24 July-4 Aug 2012 -
A lot more focus on the Pemigewasset River and
Little Squam.
Art's trips to the Baker River tend to be early
morning, and his trips over to Little Squam Lake
are pretty much right at 5PM. They must serve up
a great Trout Margarita at happy hour over
there! |
|
4-21 Aug 2012 -
Compare this map to the one two above, where we
saw almost every trip away from the nest
followed by a return trip. Here we see lots of
trips away from the nest that are followed by a
track to another fishing spot. Seems like the
fishing is getting a bit harder for some reason. |
|
4-21 Aug 2012 -
Here's the same data without the tracks. A bit
easier to see where Art's been fishing--mostly
the Pemigewasset River and Little Squam Lake. |
|
22-29 Aug 2012: The fishing seems to have
dried up at some of Art's favorite spots. During
the week, no trips to the Baker River, and only
one trip to Hawkins and Sky Ponds. Little Squam
is still productive, apparently, as is one spot
down on the "Pemi."
He should be heading south soon.... |
|
30 Aug-4 Sep 2012: We can infer from Art's
latest movement data that his daughter has taken
off. His mate would have left sometime around
the middle of the month, most likely, leaving
him to take care of the young until it left the
natal area. That apparently happened around 31
Aug, as that's the last day Art was near his
nest. Since then he has been roosting on the
banks of the Pemigewasset River and feeding a
lot at Sky Pond--again. Interesting that this
pond, a favorite early in the summer, is now
productive again. This probably has something to
do with water temperature.
The instigator of the New Hampshire Osprey tagging,
Iain MacLeod, has been over to Sky Pond recently
and reports that trout are rising everywhere--an
Osprey smorgasbord! |
|
5-10 Sep 2012: The last 6 days before Art
started his migration were pretty much the same
as the previous week. He only made one trip up
to his nest on the 7th, probably looking for his
passport!
Other than that, he pretty much just commuted between
his roost on the "Pemi" and Sky Pond, which, my
colleague on the New Hampshire Osprey project
reports, is chocker-block full of trout. Iain
even caught a picture of Art with a trout on the
day before he (Art) headed for points south. |
|
10-13 Sep 2012: Art
started migrating on the 11th. The other two
tracks leaving New Hampshire are Chip and Jill,
two juveniles tagged in Tilton, NH, not long
after they had begun flying.
Art
apparently agrees with Horace Greeley's advice
to "Go west, young man!"
Other than our youngster Meadow, who wandered all the
way to Lake Superior, this is the furthest west
we've had an Osprey go on fall migration. He
even went north of Hawk Mountain, the iconic
hawk migration lookout on Pennsylvania's
Kittatiny Ridge. And, no, Hawk Mountain is not
an active volcano, but I couldn't resist when I
saw the icon available in Google Earth ;-).
Raptors will follow ridge lines like these folded
mountains, capitalizing on "orogenic," or
mountain-induced [our 50-cent word of the day]
updrafts. They can glide along the ridges
getting a boost from the winds.
Looking at this view, I can see why the Waggoners Gap
Hawk Watch site records so many raptors. They're
catching birds coming along the ridge north of
Hawk Mountain, who then come through the
Susquehanna River Gap. For some reason, Art
stayed on a westerly course and won't have been
counted at Waggoners. I was up there on Monday
and saw a few Ospreys, along with a bunch of
Bald Eagles and lots of Broadwinged Hawks. |
|
12-15 Sep 2012: After dodging the Hawk
Mountain counters, Art continued to ride ridge
winds west and south through the Appalacian
Mountains in Pennsylvania, Maryland (probably
for about 10 wingbeats), and West Virginia.
Shortly after crossing the Virginia state line,
he headed out across the Shenandoah Valley and
pushed on south towards North Carolina. |
|
11-15 Sep 2012: The trip so far. Art settled
down on the Dan River in southern Virginia on
the 15th. At this point his roost-to-roost
distance traveled was 1,085 km (a bit over 600
miles). This is a pretty average rate.
While Art knows where he's going--adults always go back
to the same winter location--this is the first
year we're tracking him, so we've no idea where
he'll wind up.
("Always" is admittedly a big word, but we've never
tracked an adult that didn't go back to the same
spot each winter.) |
|
15-19 Sep 2012: This looks a lot like Art's
home back on the Pemigewasset River. He should
be comfortable here. |
|
19-22 Sep 2012: After a three-day bivouac on
the Dan River, he continued his journey towards
his winter waters. |
|
21-25 Sep 2012: Art's moving right along, in
the middle of our pack of Ospreys heading south.
Cutch, Jill, Bones, and probably Belle are ahead
of him, Thatch is right by his side, Chip and
North Fork Bob are waiting for their migration
muses to talk to them, and our two cell-tower
birds (Bridger and Rammie) are probably behind
him as well.
At this point, he's flown1,851 miles (2,979 km) since
he left New Hampshire 15 days ago. His average
distance on days he was actually migrating was a
very normal 154 (248 km). |
|
25 Sep-3 Oct 2012: Art didn't seem to be in
much of a hurry as he made his way across Cuba
and Hispaniola, moving less than 100 miles/day. |
|
4-5 Oct 2012: Art left the Dominican
Republic early on the 4th, starting the day's
travel around 6 AM (an early start for an
Osprey). He made the 450 mile (720 km) crossing
in about 18 hours. He was doing the standard 25
mph throughout the day on the 4th. |
|
5-14 Oct 2012: Art is heading to his
wintering area. We don't know where it is, but
he does. |
|
11 Oct 2012: Along the way, Art passed just
east of Angel Falls in southern Venezuela.
(I once got to fly down that valley in a 727--we
were looking out the side windows at the Falls!) |
|
13 Oct 2012: Art passed over the huge
savanna in the Brazilian state of Roraima. |
|
13 Oct 2012: This looks like some samples of
granite we've been looking at for our kitchen
remodel. |
|
15-18 Oct 2012: Art has made it to the
Amazon in northeastern Brazil. We thought he
might stop here, but he kept right on going.... |
|
11-21 Oct 2012: This overview of his track
so far shows how he has been on a pretty
constant compass course since he hit the
Venezuelan coast. |
|
18-23 Oct 2012: Art continues his journey to
someplace he knows has good fishing.
At this point it was 41 days ago that he left his nest
area in New Hampshire. He's been actually
migrating on 38 of those days. He's flown 4,631
miles (7,452 km), averaging 122 miles/migration
day (196 km/day). |
|
20-23 Oct 2012: Art settled down for a few
days near the confluence of the Tocantins and
Araguaia Rivers. We thought maybe this was the
last stop, but once again were wrong. I haven't
uploaded the maps yet, but his download on the
26th has him even further southeast. |
|
26 Oct-7 Nov 2012: Art didn't move far. This
could be his wintering area. |
|
26 Oct-7 Nov 2012: A close-up view of where
and how Art spent the last 2 weeks. He obviously
has a few perches he uses a lot. |
|
21 Oct-31 Dec 2012: After about a month and
a half down on the Rio Araguaia, Art headed back
to the Rio Tocantins. |
|
1 Jan - 11 Mar 2013: Art has settled down on
some ox-box lakes just north of the main channel
of the Rio Tocantins. He should be heading north
soon. |
|
|
|
|
|
|