Hagstrum knew that homing pigeons could hear sounds as low as 0.05 hertz, low enough to pick up infrasounds that were down around 0.1 or 0.2 hertz. So he decided to map out what these low-frequency sound waves would have looked like on an average day, and on the days when the pigeons could home correctly from Jersey Hill.
He found that due to atmospheric conditions and local terrain, Jersey Hill normally sits in a sound shadow in relation to the Cornell loft. Little to none of the infrasounds from the area around the loft reached Jersey Hill except on one day when changing wind patterns and temperature inversions permitted.
That happened to match a day when the Cornell pigeons had no problem returning home.
"I could see how the topography was affecting the sound and how the weather was affecting the sound [transmission]," Hagstrum said. "It started to explain all these mysteries."
The terrain between the loft and Jersey Hill, combined with normal atmospheric conditions, bounced infrasounds up and over these areas.
Some infrasound would still reach Castor Hill, but due to nearby hills and valleys, the sound waves approached from the west and southwest, even though the Cornell loft is situated south-southwest of Castor Hill.
Records show that younger, inexperienced pigeons released at Castor Hill would sometimes fly west while older birds headed southwest, presumably following infrasounds from their loft.
Hagstrum's model found that infrasound normally arrived at the Weedsport site from the south. But one day of abnormal weather conditions, combined with a local river valley, resulted in infrasound that arrived at Weedsport from the Cornell loft from the southeast.
Pam please tell Donnie these Hansennes do indeed have a lot of class. Large wings like I've never seen like maybe on a duck or owl. They have a lovely prance, and their Roman noses takes the cake. Love it! Keep up the good breeding Donnie.
Dear Don,
Just sending a gift for my appreciation for getting such nice Sion birds from you. When I get some youngsters from them, I will send you some photos. I am still planning on purchase another hen and cock. Have a good breeding season with your birds.
Received birds this morning here in Missouri. They are safe and both beautiful.
Beautiful female pigeon. Lovely mix of colors, fether quality and great posture. I figured her picture wasn't the best pose. The male is impressive and very masculine looking and I'm happy to say they are calm and get along very well together. Thanks again they are gorgeous....
The birds arrived today got them all tucked in the loft. You saved the best for last I think there nice birds ,,only sorry I didn't buy a couple of the other hens. Thanks alot
Hello. I received the birds today they look great. Thank you very much.
The Hen is here! Awesome bird & I can feel the power just holding her. She is very calm pigeon & that is always a plus. Thanks so much!
Hi this is Nate from Wisconsin. I just wanted to let you know the Andalusian cockbird made it here in good shape today. Thanks again!
Hi Don, birds are adapting well. I like their presentaion & calmness. Looks like they will fit in with my birds. I see what you mean about the BB. We'll see how he produces. Might b a genetic thing & go away when crossed with and unrelated hen.
Regards
Jim
Halo! Just picked up bird from post office. Thank you very much!
Thank you very much for your attention. the pigeons are beautiful and eat well. Im recommending your pigeons to my friends. I hope to buy more pigeons from you in the future. Thank you.
Arrived early and in perfect condition. I have 8 favorites.
