The Mystery Of The Curlew Egg

A couple of days ago we spotted a far off Long-billed Curlew in flight with something in its bill.  It was much too distant for decent photos but I was curious about what it was carrying so I scoped it with my 500mm.  Even at that great distance it was obvious that the bird was carrying an egg.  I actually fired off a couple of frames but the curlew was so far away that I just deleted those images when I got home.  I wish I hadn’t now… I’ve seen and photographed birds carrying egg fragments from the nest after the hatching of their chicks multiple times but this seemed a little strange because it looked like an entire egg rather than just a  fragment (which I didn’t think at all likely or even possible).  Another thing that strikes me as unusual is the fact that this bird was several hundred feet in the air and flew a significant distance with the egg even though BNA Online says that when curlews dispose of eggshells they fly only “several meters” from the nest before alighting to drop the shell.     We watched the bird fly and then eventually land on a gravel road where we were able to find the abandoned egg.  Here you see it undisturbed as we found it.  Now I’m no curlew expert but I’m going to speculate that this egg didn’t “hatch”.  It doesn’t look like it has been pipped from the inside by the egg tooth of the chick and besides the hole in the egg simply has to…

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Common Raven Disposing of Eggshells

 When this Common Raven landed on a large rock fairly close to me last week on Antelope Island I could see that it had something in its beak and assumed that it was some type of food.  It wasn’t until I got home and processed the images that I could tell what it was.   Canon 7D, 500 f/4, 1.4 tc, 1/2500, f 6.3, ISO 500 It turns out that it was eggshell, presumably from its own nest.  In researching Common Raven eggs I found that they have this kind of marking and color (though there is some variability in both) and this shell remnant seemed to be about the right size for a raven so my assumption is that it’s a raven eggshell and not leftovers from a meal from raiding the nest of another bird.  There is a raven nest relatively close to this rock.    Canon 7D, 500 f/4, 1.4 tc, 1/2500, f 6.3, ISO 500 Here the raven is very carefully placing the shell in a crevice in the rocks.  At the time I took the photo I couldn’t figure out why the bird would simply abandon what I thought was food.      Canon 7D, 500 f/4, 1.4 tc, 1/3200, f 6.3, ISO 500 Here the raven has dropped the eggshell…     Canon 7D, 500 f/4, 1.4 tc, 1/2000, f 7.1, ISO 500 and then it hopped to the peak of the rock to “crow” about its accomplishment. Birds of North America Online says this about raven eggshell disposal – “No…

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