Avocet Wing-stretch – A Predictor Of Behavior
In my experience American Avocets have two primary “styles” of stretching. When they stretch a single wing they extend it to the side with one leg stretched out behind. But they also use what’s called the “two wing stretch” and this style is often a precursor of imminent behavior – takeoff.
Male Harrier Cruising The Causeway
I have a strong affinity for Northern Harriers ( a little secret that’s difficult to conceal, given the vanity plates on my pickup). And though I love to photograph either sex there’s just something about the adult males that has a special appeal for me. Part of that attraction is probably the relative rarity of the adult male colors since the juvenile colors of both sexes resemble that of the female.
The males are called the “gray ghost” for good reason.
Some Interesting Hummingbird Biology
Some of the hummingbird images I’ve taken the last few days on Antelope island illustrate a few of their fascinating adaptations for their rather unique lifestyle.
Hummingbirds, Butterflies And Rocky Mountain Bee Plant
Yesterday morning on Antelope Island hummingbirds were buzzing frantically over clumps of Rocky Mountain Bee Plant, a species of Cleome that produces copious amounts of nectar so it attracts hummingbirds, butterflies, bees and wasps. All four were present. As a biologist I enjoyed watching the natural processes at work here. The long, showy pollen tipped stamens and deeply buried nectar, when combined with the long bill of the bird, are the perfect combination to suit some of the biological needs of each species. The hummers were often covered with pollen.
Odd Growths On The Face Of A Pronghorn
Earlier this month we encountered an unusual male Pronghorn on Antelope Island. Close inspection through our lenses revealed something that caught our attention – this animal had two strange-looking projections apparently growing out of the top of its muzzle. .
Pied-billed Grebe With Eyes Bigger Than Its Than Stomach
Pied-billed Grebes are both pugnacious and gluttonous and it’s not unusual for them to capture and attempt to swallow prey that is marginally too big to go down the hatch, which can lead to some interesting and amusing behaviors at feeding time..
Injured Prairie Falcon Report From The Centennial Valley
Two days ago I called Bill West, Project Leader at Red Rock Lakes National Wildlife Refuge in the Centennial Valley to ask him about the effects of the recent forest fires and resulting smoke in the area. During the conversation Bill told me about an incident that immediately got my attention.
Mountain Plovers – “Prairie Ghosts”
Early last April we discovered a pair of Mountain Plovers on Antelope Island. This was only the 10th confirmed sighting of the species in Utah so it created quite the stir when we reported it to UBIRD
Western Grebe – Dumping The Chick Load
At this age Western Grebe chicks are heavy-bodied, small headed, loud, awkward and demanding. They alternately ride on the back of each parent (back brooding) as the other adult rests or hunts for fish to feed to its family. At this stage the youngsters are good swimmers and there’s often not enough room on the parents back for all of the chicks to ride comfortably anyway so the parent uses an interesting strategy to “dump its load” into the water when it needs a break.
Swainson’s Hawk Optical Illusion
Each time I look at this image, at first the wing above the head appears to be the birds right wing on the far side of the body. But then a few seconds later my brain tells me that’s impossible because the lower wing is obviously the right wing and it’s impossible (or at least highly unlikely) for the hawk to have two right wings.