An online resource based on the award-winning nature guide

Gallinaceous Birds

Winter Adaptations of the Ruffed Grouse

Ruffed Grouse have both behavioral (diving into the snow on cold nights) and physical strategies for dealing with the cold, snow and ice of New England winters.  Three of the physical changes that take place in the fall are evident by looking closely at a grouse’s legs, feet and beak. The feathers on its legs grow thicker and further down towards its feet, to provide better insulation.  Small comb-like growths of skin, called pectinations, develop along either side of each toe.  These increase the surface area of a grouse’s foot, and serve as snowshoes in deep snow.  They also help the grouse cling to icy branches while it quickly snips off poplar and other buds at either end of the day.  And on its beak, feathers expand downward to cover its nostrils, slowing the cold air and giving it a chance to warm up before it is inhaled by the grouse.

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com  and click on the yellow “donate” button.


Tom Turkeys Strutting Their Stuff

3-19-18 wild turkey IMG_7081Congratulations to Penny Jessop, who submitted the first correct Mystery Photo answer!

In the Northeast, male Wild Turkeys begin gobbling and strutting in late February. Their courtship ritual usually starts before females are receptive, and continues into late March and early April, when mating typically takes place.

At this time of year males are bedecked with blue wattles (flap of skin on throat) and snoods (fleshy piece of skin that hangs over beak), and bright red major caruncles (bulbous, fleshy growths at the bottom of the turkey’s throat). Displaying these adornments while slowly gliding around a female, the male fans his tail, lowers his wings with the primaries dragging on the ground/snow (these primary wing feathers are responsible for the parallel lines either side of the trail of tracks), elevates the feathers on his back and throws his head backward the female. If she is receptive, she lowers herself and crouches on the ground, signaling to the male that he may mount her.

Naturally Curious is supported by donations. If you choose to contribute, you may go to https://naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Hen Turkeys Protecting Poults

6-12-17 wild turkey hen 197

Wild Turkey chicks, or poults, can be seen these days scurrying at their mother’s feet, trying to keep up with her as they forage in fields for grasshoppers and other insects. How the hen turkey reacts to a human (or other) threat depends on the age of her poults. If they are very young (under a week old), she huddles stock still with her brood in a frozen position.   With wings and tail spread, she provides them with shelter. If they are detected, she gives a vocal command to her young to remain “frozen,” and feigns an attack on the intruder, simultaneously making a “putting” sound to quiet her chicks. By the time they are a week old, poults tend to evade possible predators by running away. At nine days old and later, most poults fly into low vegetation when threatened. By the time her brood is three weeks old, the hen commands them to fly into trees at the sign of danger.

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Tom Turkeys Gobbling & Strutting

3-30-17 tom turkey IMG_7637In the Northeast, male Wild Turkeys began gobbling and strutting in late February. Their courtship ritual usually starts before females are receptive, and continues into late March and early April, when mating typically takes place. Hearing a tom turkey gobble is as sure a sign of spring as the sight of one strutting.

At this time of year males are bedecked with blue wattles (flap of skin on throat) and snoods (fleshy piece of skin that hangs over beak), and bright red major carbunkles (bulbous, fleshy growths at the bottom of the turkey’s throat). Displaying these adornments while slowly gliding around a female, the male fans his tail, lowers his wings with the primaries dragging on the ground/snow, elevates the feathers on his back and throws his head backward the female. If she is receptive, she lowers herself and crouches on the ground, signaling to the male that he may mount her. (Thanks to Chiho Kaneko for photo op.)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.

 


The Relationship Between Ruffed Grouse & Poplars In Winter

1-12-17-ruffed-grouse-aspens-049a2566Poplar (also called Aspen) buds are an important winter food source for wildlife, but for none as much as the Ruffed Grouse. During the course of a year, a Ruffed Grouse may feed from as many as 100 species of plants, but in the winter, species of poplar are by far its most important food source. In fact, the relationship between grouse and poplars is such that the range of the Ruffed Grouse is practically identical to the range of Trembling (also known as Quaking) Aspen (Populus tremuloides) and Big-tooth Aspen (Populus grandidentata).

Poplars are dioecious – the male and female flowers grow on separate trees. Although grouse will settle for any poplar bud, it is the male flower buds of Trembling Aspen trees which they prefer, due to the buds’ high amounts of proteins, fats and minerals. (Female buds are smaller and have less nutrients, oddly enough.)  Ruffed Grouse seldom feed on a poplar tree that is less than 30 years old. Perhaps these older trees have more vigorous buds, or perhaps their branches are easier to perch on because they are larger. (Information source:  Ruffed Grouse: Woodland Drummer by Michael Furtman)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com    and click on the yellow “donate” button.

 

1-13-1


Ruffed Grouse Drumming

3-22-16 ruffed grouse IMG_0778A majority of male passerines, or perching birds (also called songbirds) claim territories and secure mates through song.   With the help of a syrinx, or voice box, musical notes, some more complex than others, are created.  There are species of birds in different orders that use other parts of their bodies for territorial and courtship displays, among them ruffed grouse (wings), American woodcock (wings) and Wilson’s snipe (tail).

Male ruffed grouse, also known as partridge, are aggressively territorial throughout their adult lives, defending roughly 6-10 acres of woodland which is usually shared with one or two hens. The male grouse claims his property by engaging in a “drumming” display during which he creates a sound reminiscent of a lawn mower starting up. This sound is made by the male beating his wings against the air to create a vacuum, as lightning does when it makes thunder. The drummer usually stands on a log, stone or mound of dirt roughly 10-12 inches above the ground when drumming and this substrate is called a “drumming log.” He does not strike the log to make the noise, he only uses the drumming log as a stage for his display.

Grouse occasionally drum in the summer and fall, but in the spring, drumming becomes more frequent and prolonged as the male advertises his location to hens seeking a mate.  This phenomenon is heard but rarely seen by humans; Lang Elliott has captured both the sight and sound of a ruffed grouse drumming in this extraordinary video:   http://langelliott.com/mary-holland/ruffed-grouse/    (Sound recording © Lang Elliott – langelliott.com)

 Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com  and click on the yellow “donate” button.


Ruffed Grouse Flying Into Windows

1-25-16 dead ruffed grouse by Eve BernhardThose of us who feed birds are well aware of the hazards that windows and glass doors present to birds. The latest research shows that roughly 988 million birds are killed each year in the United States from hitting windows. Migratory birds and songbirds are the most common victims, but Ruffed Grouse, especially in the fall and winter, are very apt to collide with glass windows. (This phenomenon is not the same as the aggressive behavior towards glass that a bird’s reflection can promote, especially by males during the breeding season.)

Many of the grouse victims are first-year birds. Often, inexperienced young grouse, frightened by a predator, crash into buildings, trees or windows in a so-called “crazy-flight.” Hard, transparent glass is not something grouse recognize as a barrier, due to the reflections it creates. There are a number of things one can do to reduce the chances of this happening. Netting, decals, window film and tape hanging from the top of the window can help. One of many creative new products available are window panes that have external patterns that birds can see from the outside, but that are invisible from the inside. On a national level, legislation and bird-friendly buildings are gaining traction. For more window crash-prevention ideas, go to http://www.birdwatchingdaily.com/featured-stories/15-products-that-prevent-windows-strikes/. (Photo by Eve Bernhard)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.