Comments

• Audrina

  I noticed that the hawks are getting the deuterium from the prey they eat. I think that there are varying levels of deuterium throughout the world because of the annual rainfall in each region. There is more rainfall in the south, so more hydrogen isotopes can be found.

  10/22/2011 10:15:21 AM
• Madison

  I can see that the higher the Cooper's Hawks fly the more hydrogen isotope deuterium the birds carry on their feathers. Maybe there are different deuterium levels throughout the world because different places have different climates, differently developed cities, and different bodies of water down below. This would have effected the air above it because the different amount of gases, moisture, and pollution that rise into the air would have varied throughout the world depending on what kind of gases, amount of moisture, and pollution there are in that area in the world and how much deuterium there is in it.

  10/22/2011 7:04:03 PM
• b-dog

  I think there are different deteruim levels in the world because of more pollution in the air. The young birds have it in there wings because when they fly it gets in there wing. the older ones dont have it because they shed there feathers more often then the younger birds do

  10/23/2011 4:03:59 PM
• Tmoney

  The reason i nthink that there are varies of levels because of their feathers. The reason why it is because the feathers have small amounts of hydrogen isotope deuterium, which concentrates distinctive for certain latitudes.

  10/24/2011 9:50:25 AM
• DabneyHeartsJacobP

  1.)The deuterium helps tell where bird has been. Without it, all you know is that the bird has been different places; you don't know exactly where it has gone.
  
  2.)I think there are varying levels of deuterium because the hydrogen isotope deuterium is in the feathers, which I before mentioned, tracks down the birds tracks.

  10/24/2011 9:57:22 AM
• Natabee

  The relationship between deuterium and the cooper's hawk is that deuterium shows where the bird was born or where it last migrated to. Maybe the reason for deuterium verring at different lattitudes is because of polution in the air.

  10/24/2011 10:05:11 AM
• Steven

  there were varying levels of deuterium in the Coopers hawk because of the places they were born.
  

  10/24/2011 10:14:21 AM
• Brendan

  The feathers contain a small amount of hydrogen and deuterium. I think this is because the diffrent types of lattitude they fly at.

  10/24/2011 10:15:54 AM
• Steven

  there are verying levels of deuterium in the Cooper Hawks becasue of the places te birds were born. Another reason of the leavels of deuterium becasue the birds travel to other places thats why they ave diffent levels of deuterium in their wings

  10/24/2011 10:17:45 AM
• The Social Butterfly(Olive Garden)

  Scientists found out you can base the latitude of the detirum. The birds that are going to have the highest level of detirum are the ones in the south. The warmer it is the higher the detirum levels go because the tempratures affect the levels of detirium.

  10/24/2011 11:33:35 AM
• Anna

  The relationship between Cooper's birds counted and the deuterium levels is that as the years go on, the population of the birds gorws, and the closer you get to the equator, the more deuterium in rainwater there will be. I think there are varying levels of deuterium throughout the world because there different climates around the world there are different amounts of rainfall

  10/24/2011 11:43:39 AM
• Liam

  i think that deterium level is different because of its altudtude and how it is in different climates that would change the deterium levels.

  10/24/2011 3:43:03 PM
• Anders

  The relationship between the Cooper's Hawks deuterium levels is that during the migration period in the north there are much lower levels of deuterium. I think that there are different levels of deuterium throughout the world because of the climate and the different areas distance from the equator.

  10/24/2011 5:33:44 PM
• Angela (a.k.a Vinegar -.-)

  After reading the article about the hawks and deuterium levels,I learned that the deuterium level in a bird can tell you at what latitude that bird was raised at. It seems to me that the higher the level of deuterium in the hawk, the closer the latitude was to the equator.I think there are varying levels of deuterium throughout the world because the levels depend on where in the world it is located. The surroundings in a particular place can have a greater effect on the deuterium level than it'll have in a completely different place.So the deuterium level all depends on where in the world it is.

  10/24/2011 8:07:43 PM
• spencer:)

  The difference in deterium levels found in the hawks are that feathers from younger hawks have more deterium levels and we are able to find out which latitude the bird was raised in, however; in older hawks, it is hard to tell because birds shed their old feathers from when they were young and grow new ones. It is unclear at which latitude the old bird was raised in. I think there are varying deterium levels in the world because everywhere we go, there are different levels of things and different amounts. Some places might have more or less than others.

  10/24/2011 9:21:02 PM
• HOCHHAUSLER

  Well...a lot of you noted that the deuterium levels were measured from the feathers, but the question you need to address is: Why do the deuterium levels vary at different latitudes?

  10/25/2011 7:19:30 AM
• williegumdrops

  i realized that the hawks had taken in thier deuterium from most of the prey they had caught and they didnt really have any before.

  10/25/2011 1:26:31 PM
• Mimi

  I think that deuterium levels vary around the world because there are different latitude levels all around the world

  10/25/2011 1:27:12 PM
• Jaffa Cake Joe

  The levels of Cooper's hawks have been rising steadily in the last 4o years but now they're growing rapidly. I think this is due to the deuterium a hydrogen isotope, is causing the birds to fly lower, therefore we see more of the birds

  10/25/2011 1:34:18 PM
• Mimi

  i think there are different levels of deuterium at different latitudes because there different levels of hydrogen in different parts of the world.

  10/25/2011 1:36:13 PM
• Marcie

  The relationship is that hawks carry the hydrogen isotope deuterium in their feathers.I think their are varrying levels of deuterium thoughtout their world because there are many different climates and different annual rainfalls; in the third picture the higher levels of deuterium in the south.

  10/25/2011 1:38:56 PM
• the coolest!!

  I think that there is a varying amount of duterium in the world because there is less duterium in the raifall(or more) and there are higher rates of duterium around the world. This is becasue duteriem is carried in water, and that is how the hawks recieve most deterium. Secondly, the relationship between duteriem and the hawks are that the duterium found on the hawk shows the height that the bird was fling at.

  10/25/2011 1:41:39 PM