Blog by Wild Birds Unlimited of Grosse Pointe Woods

Tag Archives: Spring

Bird Spotlight: Green Heron

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Photo Courtesy: Valerie Gebert

“They look like a kindergartner that dressed for school, choosing bright pants that didn’t match the multiple colors they put on,” said my niece after observing a Green Heron at the shoreline of an inland lake. Technically, they aren’t truly green; they have more of a greenish-blue cast to their backs like velvet draperies in an English Manor; a deep chestnut body, a darker, capped head and bright yellow legs. They also have white underneath the tail, most evident when the tail is flicked in agitation.

Diet & Feeding Behavior

Green Herons wait patiently for prey to cross their paths as they sit perched in every imaginable yoga pose along the water’s edge. Small fish, crustaceans, frogs – all are on the menu. Watching these birds hunt is a lesson in patience and perseverance. They stand for many minutes with necks retracted, their stares fixated at the water in front of them. When prey comes within striking distance, they strike quickly, extending their necks to almost the full length of their bodies. Whatever the catch, the heron flips it down into the back of the beak, then down the hatch in one gulp!

Photo Courtesy: Beth Miller, as seen on Cornell Lab of Ornithology’s “All About Birds” site

If you are lucky enough to come across them in your outdoor adventures, sit and watch; you may see another behavior that is sure to blow your mind – a Green Heron using a tool to fish. Yes, Green Herons uses tools to lure fish, dropping insects, twigs and feathers onto the water’s surface. This is an amazing sight to see, and one that I have been fortunate enough to witness from the quiet of a kayak.

Photo Courtesy: Valerie Gebert

Habitat

Where can you find Green Herons? They prefer bodies of water with vegetation near the shoreline. Think of our inland lakes and all of the exploring you can do in early morning. Our Huron-Clinton Metroparks are great places for this type of birding. The Edsel & Eleanor Ford House is another likely spot. Use your binoculars to scan the water’s edges, as well as checking lily pads. Listen carefully for a loud “SKEOW!” – a likely sign of a Green Heron relocating. I have noticed they often verbalize while flying from one space to the next.

Photo Courtesy: Valerie Gebert

Nesting

Green Herons make nests from twigs which they situate in trees. Both parents tend to the young. To start, the female lays between 3-5 eggs, and both she and her mate incubate them for 19-21 days. The youngsters are then fed by both parents, who regurgitate food into their mouths. In another 21-23 days, they’re ready to fly. Finally, the young fledge at about 30-35 days of age, meaning they are no longer dependent upon their parents. Green Herons mate monogamously each breeding season, often changing mates from one season to the next.

Wintering & Other Fun Facts

After breeding in Michigan (as well as in other states), Green Herons spend their winters in Mexico and Central America. However, during the post-breeding season, they have been known to show up as far as England and France, which is as exciting for the people there as it is for us when we see a Snowy Owl – what a special treat!

Photo Courtesy: Valerie Gebert

The oldest Green Heron on record was 7 years and 11 months old. It was found in Mexico in 1979 and first banded in Oklahoma in 1971.

Did you know – a group of herons can be called a rookery, a battery, a pose, a scattering or a hedge?

Whatever you call them, I hope you see many Green Herons in your forays into the field this year!

 

Enjoy your birds,

-Rosann Kovalcik

Owner, Wild Birds Unlimited, Grosse Pointe Woods

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References

Cornell Lab of Ornithology. (2017). Green Heron Overview.

Retrieved from https://www.allaboutbirds.org/

guideGreen_Heron/overview

Northern Cardinal – A Crimson Jewel in the Garden

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male Northern Cardinal by Kathi Hince

One of the moments I like most about late winter is hearing the Northern Cardinal beginning to sing. Prompted by the length of day, the Northern Cardinal sings to mark its territory.

If we’re lucky, we can hear two male Cardinals calling in tandem in a hormonal duel. Unlike many other songbirds, the females also sing. Often in response to the song the male initiates, the female will sing from the nest. Many times, her song is longer and more complex than the male’s! During nesting season, this is her way of asking her mate for food, as she is the sole incubator and does not leave the nest. Cardinals have an amazing physiology within their syrinx which allows for their complex song. Click here for a link to recordings and explanations.

Northern Cardinals appeared in Michigan in the late 1800’s, expanding their range due to deforestation. Cardinals prefer the opening of forest edges as well as low shrubs, so our yards make great habitat for these birds!

female Northern Cardinal by Kathi Hince

Nesting

The female Cardinal is responsible for nest building. She bends twigs around her body and uses her feet to push them into a cup shape. There are four layers to the nest including: coarse twigs, a mat of leaves, thin bark, and a soft top layer of grasses, rootlets and pine needles.

In Michigan, Northern Cardinals start to nest in mid-April, laying 2 to 4 eggs. Incubation takes up to two weeks. After hatching, the young stay in the nest another few weeks fledging. The young are fed protein in the form of caterpillars and other soft-bodied insects. Adults are omnivorous, adding seeds and fruits to their diet of insects.

male Northern Cardinal by Kathi Hince

More Fun Facts

These birds are named for their bright red plumage thought to be reminiscent of the cleric by that name. The have the distinctive honor of being the State Bird of no fewer than seven states, which is more than any other bird.

Another endearing aspect of Cardinals is how the male feeds the female as part of courtship display. This is a change from their behavior in the winter, when it is every bird for itself.

Juvenile Cardinals look like the females, a warm brown with golden overtones, and a lighter belly color, sporting red in their tail feathers,  wings and crest. The difference between female Cardinals and the young is the females have a bright red beak, whereas young birds have a gray/black beak.

The males have a prominent black facial mask larger and more striking than the females’. The beak is a distinctive characteristic in Northern Cardinals. It is very short and robust – a true seed cracking tool. The cardinal holds a seed in the beak, with a crunch down to crack the shell, then a roll of the tongue to rotate the seed until the shell falls away. This leaves the nut “meat” for the bird to consume. This method of eating allows the Cardinals to stay at feeders and eat. Other birds like Chickadees must instead fly off to a perch where they can hold the seed in their feet in order to extricate the edible portion of the seed.

Window Strikes

Northern Cardinals are one of the species of birds that are known to attack their reflection in a window or car mirror, repeatedly striking the surface, much to our frustration and dismay. This behavior takes place because the bird believes it is attacking another bird, an intruder in the nesting territory. In order to stop this behavior, block the birds’ reflection on the outside of the window. A product aptly named Stop Bird Attack is sprayed on the outside of the window, easily removed when no longer needed (this product sold at Wild Birds Unlimited in Grosse Pointe Woods).

male Northern Cardinal by Kathi Hince

Attracting Northern Cardinals

To attract Northern Cardinals, offer black oil sunflower either in or out of the shell, safflower and shelled peanuts. All of these seeds can be place in a hopper feeder with a larger ledge or a tube feeder with an added tray, essential for their body size if they are to reach the feeding ports.

Take a listen for this beautiful songster, filling the days with sound that will lift your spirit.

Enjoy your birds!

-Rosann Kovalcik

Owner, Wild Birds Unlimited, Grosse Pointe Woods

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