Just a short time ago it was common, to see gobblers strutting and 
gobbling while courting the hens, but now it is becoming rare.  Today we
 will look at a few of my best gobbler photos taken this spring. In most
 cases I prefer to be very close to the birds, but the gobblers in the 
photos below are 150 yards away as measured by my Bushnell rangefinder.
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| Quartet Of Gobblers: Canon 5D MKIII-Canon 600mm F 4.0 IS L- ISO 400-1/250 sec - f 8.0 | 
I began my session with the birds by using
 the 5D MK III camera body on the 600mm F 4.0 with 1.4X extender, but 
soon changed to the 7D body to take advantage of the 1.6 crop sensor. I 
have owned a 5D MK III since 2012 and I am still not certain if there is
 an advantage to  using the crop sensors for long range work or if one 
is better off using the full frame and cropping more in post 
production.  With that being said the photos shown today are not the 
best for comparison as they are cropped in post and  do not show what 
frame size and detail each camera captures at that distance. They are 
also cropped to different aspect ratios with two of them being 3:2 and 
two 4:5. In addition the sun was not out when I the 5D MK III and  it 
was in those that I used the 7D. Compared to the 7D, I can get sharp 
focus more reliably with the 5D MK III and it performs much better at 
higher ISO settings, but  the bottom line is that the 7D is still 
capable of excellent results even though it will soon have been out 
there for five years.
There are actually four gobblers 
in the photos below, but only three are plainly visible.  If one looks 
closer  you can see a rear view of the top of the tail of the fourth one
 in the first photo and a side view of the tail in the second.
  | 
| Trio Of Gobblers: Canon 7D-Canon 600mm F 4.0 IS L- ISO 400-1/500 sec @ f 8.0 | 
Attaching the 1.4x to the 600mm f 4.0 gives it a 
maximum aperture of 5.6 and I have found through  that sharpness is 
improved by stopping down to at least f 8.0.
  | 
| Trio Of Gobblers-Pose 2: Canon 7D-Canon 600mm F 4.0 IS L- ISO 400-1/500 sec @ f 8.0 | 
These photos were taken in mid-April.  I had an 
encounter with what I presume is the same four gobblers just eight days 
later--strutting and gobbling in the same spot and again I used the 7D.
  | 
| Quartet Of Gobblers: Canon 5D MKIII-Canon 600mm F 4.0 IS L- ISO 400-1/400 sec - f 8.0 | 
I have not seen the quartet for some time now, but 
the encounters I had with them will provide memories to treasure for 
years to come.
Originally published at 
Pennsylvania Wildlife Photographer by Willard Hill.