Photograph by Francois Portmann
Here she comes again. Valkyrie has spied something.
Photograph by Francois Portmann
I particularly love this photo because of Valkyrie's expression. She is looking at Francois but
isn't going to move a muscle. It's the I'm invisible stance.
Photograph by Francois Portmann
Photograph by Francois Portmann
Photograph by Francois Portmann
Photograph by Francois Portmann
Seems that these raptors tend to do better in urban areas despite the odds!
• Courtship behavior is not well documented. Male probably obtains and defends a breeding territory and attracts a female by calling and performing display flights. Courtship flights begin with both birds soaring on thermals and end with a slow speed chase of female by male. During slow speed chase, both birds alternate periods of extremely slow, exaggerated wingbeats with short glides.
Courtship is lengthy for Cooper's Hawks, and the male may feed the female for up to a month before she begins to lay eggs. They nest in a tree, 25-50 feet off the ground. The nest is often built on top of an old nest or clump of mistletoe. Both sexes help build the stick nest lined with pieces of bark. The female incubates the 3 to 5 eggs for 30 to 33 days. The male brings food and incubates the eggs when the female leaves the nest to eat. Once the 3 to 5 eggs hatch, the female broods for about two weeks. During this time, the male continues to bring food for the female and the young. He gives the food to the female, and she feeds it to the nestlings. The young start to climb about the nest at four weeks of age, and begin to make short flights soon after. The parents continue to feed the young for up to seven weeks.
Hey Donna.
I read somewhere that some red-tail pairs will split up during the migratory season and one would migrate south while the other stays in the territory. I've never seen Junior in town during the winters for the last two years so I just assumed he was one of those hawks that migrated for the winter. Obviously PM and Lola both stay in town all year long, but do you know if any of the other NYC pairs separate while one migrates and the other doesn't?
One mate of Pale Male’s in particular used to take a “winter vacation” and reappear in time to pick back up housekeeping for the next season . And the other mates before Lola, I’m told by the original Regulars, even if they over wintered in the park did not, as Lola and Pale Male tend to do, hang out together in the winter. We’ve all seen photos of Pale Male and Lola companionably perched together in the same tree, and even on occasion roosting in the same tree in Central Park for the night in the off season. Previously that would have been noted as extremely unusual.
In fact it was thought by many that splitting up geographically in winter was the normal thing for Red-tails to do-urban or otherwise. That was what our limited sample portrayed and what we read of many country hawks. Though now that we know of more urban pairs and have been able to watch them over time, “normal” for many of them is staying in town and even, yes, continuing a close relationship.
Isolde and Tristan overwintered together as do Isolde and Norman.
It is possible that it may not have been a mistaken impression that normal was separating for the winter. But rather the “habit” may have changed as more Red-tails hatched in the city and became members of urban pairs. Perhaps their experience as resident juveniles had taught them about the deep prey base of the city year round.
I also believe that some birds are wired for a bit more wanderlust than others. Perhaps some urban birds get a sudden taste for vole or chipmunk or rabbit. Can’t get them in Manhattan, so even changing boroughs or counties or crossing a river takes the hawks away from the eyes that can recognize them as individuals easily but does not take them that far away geographically in reality.
http://news.yahoo.com/s/ap/20090111/ap_on_go_co/congress_wilderness
Spotted Eagle Owl














