Tag: duck

Prairie Falcon In Flight, With Prey

This image may look familiar to some viewers because I’ve previously posted another photo of this bird with a different wing position.  I only got those two sharp shots of the falcon and I’d never processed this image before because the bird was too tight in the frame.  I’d actually forgotten about this photo until recently when I decided it was worth making the effort to add some canvas to improve the composition.    1/2000, f/6.3, ISO 500, 500 f/4, natural light, not baited, set up or called in I found this juvenile feeding on its duck kill along the Antelope Island causeway last winter on a dark and blustery late morning.  Two ravens began to harass the falcon with the apparent intention of stealing the duck so the rightful owner of the prey took off with the prize in tow.  Within seconds, an adult Bald Eagle moved in and forced the falcon to drop the duck. One thing I find interesting about this image is the angle of the bird to the horizon – it looks like it’s flying downward, but in reality it’s actually gaining altitude.  Normally, with the bird at this flight attitude, I’d rotate counterclockwise a little to make the flight angle more realistic looking, but since the horizon is in the background it’s obvious that the shot doesn’t need rotation since the horizon is level.  The reason for the angled flight attack is the load that the falcon is hauling while it’s trying to gain altitude. The lower background is the dark, stormy and…

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Northern Harriers Battle over a Mallard

Occasionally we have brutally cold winters here in northern Utah.  It’s my opinion that unusually cold temperatures when combined with thick crusted snow gives harriers little access to their staple food around here – voles.  Survival then becomes tenuous for the harriers and they’re forced to move on to other food sources like small birds, dead carp and waterfowl.   When a large meal like a carp or duck is available many harriers often fight over the food item and they do so with ferocity.   During less stressful times of the year I often see these birds skirmish but then it almost seems like a playful interlude that they do simply for “fun”.   Not so when it’s very cold and food is scarce – then it’s deadly serious and incredibly interesting to observe and photograph. First, a disclaimer.  Some of the photos I’ll present here would wither under the scrutiny of critique because of cut off or clipped wings, missing eyes or heads, lack of catch lights and difficult and rapidly changing lighting conditions.  My intent here is to show the behavior with the best images I have but some of them do have obvious flaws.  The calm before the storm I didn’t see harriers make this Mallard kill but it was still fresh when I came across this bird on the duck.  At first I though I’d simply be photographing the harrier calmly enjoying its meal but I was very mistaken.   Thinking about challenging the larger bird for the meal It didn’t take long for other birds to challenge her for the Mallard.  Some were timid…

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Northern Harriers Fight to Survive Harsh Winters

  Typically life is good for the hundreds of Northern Harriers who spend fall and winter in the marshes and prairies surrounding the Great Salt Lake after spending breeding season up north.  Here their diet consists almost exclusively of microtine voles (small rodents resembling mice).  These voles are incredibly abundant and relatively easy prey.  It’s quite unusual to see a harrier even attempt to catch a songbird or anything else for that matter.    Harrier hunting voles near the Great Salt Lake   However the easy life takes a major turn for the worse during unusually harsh winters with intense cold and deep snow packs.  During these times the voles spend most of their time underground eating roots and dried vegetation which means the primary source of food for harriers is suddenly unavailable just when they most need nourishment for warmth.  And since most songbirds (their fall-back food source) have either migrated south or have already succumbed to the many American Kestrels in the region, simple survival for the harriers is suddenly very precarious.  Now, out of desperation,  harriers begin to go for larger prey – ducks and coots for example.     Harrier on a duck kill frozen into the ice They aren’t able to take these prey often and when they do they can’t eat them quickly like they can a vole.  The result is intense aggression – fighting fiercely over food.  Typically I see very little true aggression(other than territorial squabbles) between harriers but all that changes when food becomes scarce.  A relatively large prey item will provide multiple…

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