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Monday, April 2, 2018

"SIGNS OF SPRING" - NANCY BARETT

Red-winged Blackbirds start singing on territory in late February

Robin Williams once said that Spring is nature's way of saying "Let's party!"

He was so right.  As the earth tilts toward the sun, the soil softens, the worms start turning, tree sap runs freely, birds are suddenly singing, and spring showers create a frenzy of fresh green growth.  There's an almost palpable gathering of energy as many species of animals and plants prepare for another season of renewal and reproduction.

American Robin in Pussy Willow

Real spring is much more complex than the date of the spring equinox.  For many, spring arrives with their first robin sighting.  For others, when hyacinths and crocus bloom in their gardens.  For those who spend time in nature and have come to understand the patterns of nature, spring may mean the first singing Red-winged Blackbirds and the calls of courting Red-necked Grebes in February, or perhaps when Snowdrops and Skunk Cabbage push up through a crust of melting snow (typically March).  With changing, more extreme weather patterns, these signposts can vary widely.  Many species are having to alter their migration patterns, and some have adapted to our milder winters, failing to migrate at all.  Boreal species are shifting north with the warming temperatures, while more southern birds are expanding their range north as well.

Red-necked Grebes usually return to traditional nest sites in late February

American Robins and Red-winged Blackbirds now winter over in numbers, surviving on dried berries and fruit; Mallards and Canada Geese are among those species who no longer migrate, in increasing numbers.  But the change of seasons is discernible even in the behaviour of these birds--male robins and blackbirds arrive before the females in order to secure territory, and the waterbirds engage in noisy courtship rituals.

Displaying Red-winged Blackbird

Hawks and owls are already incubating eggs or young, and chickadees and woodpeckers are hollowing out nest holes in trees long before the first green leaves appear.

Black-capped Chickadee excavating nest, April

As February wears on, the lake ice retreats and the large rafts of lingering sea ducks begin to move north.  Huge flocks of blackbirds (mostly red-wings, grackles, cowbirds) flood back in and disperse, cacophonous calls accompanying them.
Female Brown Cowbirds lay their eggs in the nests of sometimes much
smaller songbirds, forcing the host to become a foster parent to the huge nestlings

Common Grackle


Mixed blackbird flock in a cornfield in southwestern Ontario, 28 March

A couple of weeks ago, I heard the reedy whistles of a Golden-crowned Kinglet, my first of the year. Merely an early straggler on that date, but for me it was another hopeful sign of good times to come.

Golden-crowned Kinglet

Song Sparrows is an other early-arriving spring migrant, often heard singing when ice is still on the lake and bays.  Their bright, insistent song seems almost defiant in the face of the cold days and nights they still have to endure by arriving so early.


Song Sparrow amid spring buds

Beaver-nibbled dogwoods seem to glow in very early spring

Northward migration starts to ramp up as March progresses into April.  Killdeer (well-named for their strident "Kill-deer!  Kill-deer!" calls) can be heard as pairs return to their breeding territories in open, gravelly areas in the park.  A shorebird that prefers to be away from shores, Killdeer make a barely-discernible scrape in the gravel and lay 4-6 cleverly camouflaged eggs.  Wander too close to a Killdeer parent, and you're likely to be treated to the classic "broken-wing" display, to lead would-be predators away from eggs or young.

Killdeer

One of the first wildflowers of spring in the park is the unusual Coltsfoot.  Introduced from Europe, it's seen on sunny slopes on warm late-winter days, looking like a drift of early dandelions.  The bright yellow flowers bloom and fade before the leaves appear (which reminded people as being hoof-shaped or colt's foot-shaped).  Even the seed heads resemble small dandelions.

Coltsfoot

Other creatures are stirring as well.  Snakes are cold-blooded, so they need to absorb heat energy in order to move around and forage. They can occasionally be spotted sunning themselves on trails and flat rocks on early spring days, as soon as they emerge from their communal dens (hibernaculums) after hibernating all winter.  The two common species in the park, Eastern Gartersnake and Dekay's Brownsnake, are both harmless and in fact are essential to the ecological balance in the park.  Unfortunately, snakes sunning on the trails sometimes get run over by bicycles and park vehicles. Petite (growing to just 50 cm) Dekay's are sand-coloured and difficult to spot.

Dekay's Brownsnake on trail

Eastern Gartersnake peeking above the leaf litter in April

Most people, even those with no particular interest in butterflies and moths, can put a name to the conspicuous caterpillar of the Isabella Tiger Moth.  Woolly Bear caterpillars overwinter and are sometimes seen moving about on warm days early in the season.  They're even the subject of folklore, in which the width of the orange band can apparently be used as a predictor of the severity of the upcoming winter: the wider the orange band, the milder the winter will be.  In fact, the condition of the growing caterpillar (adding more orange segments with each stage or instar) is more likely to represent the bounty of the season past.

Woolly Bear caterpillar, larval stage of the Isabella Tiger Moth

In mid-April, there's an inrush of hardier songbirds returning from the south.
Brown Creepers, Yellow-bellied Sapsuckers, and Golden-crowned Kinglets seem to appear overnight in mixed flocks, especially in the evergreens of the "Bowl".  Sometimes the trees seem to be full of kinglets and creepers and their soft calls.

Brown Creeper
Yellow-bellied Sapsucker (male)

 I've seen multiple Hermit Thrushes on the same day, sometimes poking for worms and insects in the same grassy area.  White-throated Sparrows scratch around under the trees and in the leaf litter; the sunshine sometimes prompting them to perch at the tops of trees and sing their haunting, echoey "Oh, sweet Canada, Canada, Canada!", more often heard in May once they reach their northern forests.


Hermit Thrush

White-Throated Sparrow

As the air warms up, insects start flying, especially midges, harmless mosquito-like insects that hatch in huge numbers from the lakes in spring.  A readily available insect diet allows a few more migrants to filter in through mid- to late April:  Blue-Gray GnatcatchersRuby-crowned KingletsEastern PhoebesSavannah Sparrows, and even Tree Swallows.  

Blue-gray Gnatcatcher

By now, fresh new life is bursting out all over.  Fresh, bright, lime-green shoots and buds begin to unfurl.  Many trees and shrubs come into flower before the leaves sprout, attracting early pollinators. 

Willow catkins

Pussy willow


Tree "flowers"

Out on the lake, groups of migrating Red-necked Grebes, Horned Grebes, Common Loons, and Tundra Swans pass by.  The large rafts of wintering sea ducks like Long-tailed Ducks have mostly moved on by now, many moving up the St. Lawrence River to get to northern breeding grounds.  



Savannah Sparrow and midges

Migrating Red-necked Grebes

Common Loon, almost in full alternate (breeding) plumage

Horned Grebe coming into alternate plumage

Long-tailed Ducks (like this drake seen 20 April 2016) look very different in spring and summer 

The arrival of the "pioneers" of wood warblers, Yellow-rumped and Pine Warblers, trigger anticipation by many birders and photographers of a flood of colourful spring migrants yet to come. 
The very first Yellow-rumped Warblers were being reported as I wrote 
this on April 1st.  They migrate earlier in spring and later in fall than other warblers

The only warbler that regularly eats seeds, early-returning Pine Warblers can thrive until the insects start flying

Tree Swallows discussing nest box ownership in mid-April

Tree Swallows feed exclusively on flying insects and feed from dusk to dawn 

Truth is, spring is going to be different for everyone, as it should be.  One day there's still a skim of ice on the pond, it's snowing and there's a bitter northwest wind, and the next the sun is warm on your face and everything seems suddenly green again.  Get out there and see how many signs of spring you can find!

Mink sunning itself on a mild late March day.  They can be seen year-round in the park, especially in the rocky piers

The harbour from the south

Sunday, March 25, 2018

'COYOTES IN URBAN AREAS" - SPECIES SPOTLIGHT ARTICLE FROM TORONTO AND REGION CONSERVATION AUTHORITY'S WATERFRONT E-NEWSLETTER "SHORELINES"

 SUBSCRIBE TO TRCA'S E-NEWSLETTER "SHORELINES" ...

The coyote (Canis latrans) are not a new species in Ontario, having migrated here over a century ago, however, their sightings in urban areas has been on the rise over the past few years. As urban sprawl has increased throughout the years and humans begin to impede on natural habitats, coyotes have learned to adapt very well to life in the city.


Coyote facts:

  • In cities their preferred habitat is natural green spaces such as parks, ravines and river and stream banks
  • Coyotes are omnivores and will often eat what is available to them including garbage if improperly stored
  • Coyotes vary in colour, including blonde coloured fur, brown and red
  • Adult female coyotes weigh between 13 to 16 kg while males average between 16 to 18 kg
  • Coyotes often mate for life and the average litter size is five or six pups
  • Rabies is very rare in coyotes and coyotes may actually help reduce the number of rabies cases in Ontario since they prey on foxes, a species more likely to carry the disease
  • Coyotes are often wary of people and will try to avoid people whenever possible

Co-existing with coyotes:

  • Always secure garbage and compost in sealed containers with locking lids and store in an enclosed structure
  • Put garbage out the morning of its scheduled pickup
  • Never feed or try to tame a coyote
  • Do not let pets chase a coyote or roam at large. Always keep dogs on a leash.

What to do if you come across a coyote:

  • Keep your distance. Coyotes will most likely avoid you if you do not bother it
  • Back away, maintain eye contact while remaining calm
  • Never turn your back or run from a coyote
  • Raise your arms above your head and make loud noises to scare it off
Ontario is home to over 30,000 plant & animal species. Coyotes are just one of those species that contribute to Ontario’s healthy ecosystem. The key to humans and coyotes co-existing lies in us understanding the species and learning to share the natural world with them. 

Sunday, March 11, 2018

APRIL 4TH - IRENE CHOLEWKA'S PHOTO EXHIBIT - "LIFE - IN COLONEL SAMUEL SMITH PARK"

Join us on Wednesday, April 4 between 6-8 pm for the launch of "LIFE – in Colonel Samuel Smith Park", an original photography exhibition by local artist, Irene Cholewka. This alluring collection is a unique compilation of photographs that showcases the diverse wildlife and beauty in our neighbourhood park.

Free event. Everyone welcome. Light refreshments will be available.


Lakeshore Grounds Interpretive Centre - Humber College Welcome Centre

Friday, March 9, 2018

WATERFOWL VIEWING ALONG THE LAKESHORE - ARTICLE AND PHOTOGRAPHS FROM NANCY BARRETT

Winter Sunset

Winter is fickle.  One day, a sudden front moves in and coats everything in frosty white.  The next day, the sunshine feels warm, the birds are singing, and one gets hopeful for spring.  Birding in winter can feel the same way--one day, birds seem to be everywhere and the next, the landscape is silent and still.  Here in the parks along the western Toronto lake shore, there can be a surprising amount of activity as wintering birds and wildlife search for food and shelter.  Sea ducks and other waterfowl of the coasts and the northern tundra move to wintering grounds on the great lakes, sometimes in very large numbers.  The parks also occasionally host 
rare or unusual species that become a magnet for birders and photographers.  

Redhead ducks (males and one female)

I have found through years of exploring Colonel Samuel Smith Park and Humber Bay Park that some of the best views of sea and diving ducks can be had on sunny, calm winter days, in sheltered bays and inlets where there are open areas of water in the lake ice.  Ice shelves seem particularly attractive, and many species, some of which are rarely seen close to shore, will congregate to feed.  Dabbling ducks and coots, looking for aquatic plants in shallow areas or along the shore, often accompany them. 

Long-tailed Ducks gather in large rafts (swimming groups) offshore, always accompanied by their distinctive calls. 

Red-breasted Merganser (males).  Specializing in fish and crustaceans, these diving ducks have serrated bills for efficient hunting.

Ring-necked Ducks seem misnamed, given that their cinnamon collars can only be seen in good light.  They are seen occasionally in small groups or pairs in winter. 


Greater Scaup female

While many female duck species tend to wear more subtle, cryptic plumage year-round, male ducks--called drakes--are in their finest breeding (or alternate) plumage through the late fall and winter, best seen in the early morning or late afternoon sunshine.  The feathers of some drakes can light up with multicoloured iridescence that looks dull or black under overcast skies.  The ubiquitous Mallard gets short shrift much of the time, but it is undeniably attractive (they think so too). 

Mallard drake, showing off that iridescent blue speculum.

Bufflehead drakes shine in the right light, the better to attract receptive females.

Feeding behaviour of the different species is also easily observed under these ideal conditions.  In what seems like a lucky stroke, some diving ducks have developed a taste for invasive zebra mussels, along with their usual clams and crustaceans.  However, further research is needed to determine the accumulative effects of contaminant burdens from the zebra mussels.  Greater and Lesser Scaups, Long-tailed Ducks, and Scoters are among those that manage to swallow the clams whole, where the hard shells are later crushed in the gizzard.  


 Long-tailed Duck diving for mussels under ice shelf.

Female Long-tailed Duck with zebra mussels.



Greater Scaup drake with a mouthful of fresh clams.

American Wigeon eating algae from rock face.

A Hooded Merganser grasps its fishy meal with a serrated bill.

American Coots are a good reminder that not everything that floats is a duck!  Coots are related to the rails; they have large feet with lobed toes, rather than webbed toes like ducks, and rather than waddling on land, they have a still-comical chicken-like gait.  They can be seen in small numbers, mingling with other dabblers, feeding on aquatic plants. 

American Coots with aquatic plants.

The uniquely lobed toes of a coot.

Grebes, another type of waterfowl seen in winter, share lobed toes with the coots, but they have no close avian relatives. With legs situated far to the rear of their bodies, these birds are barely able to walk on land.  Red-necked Grebes, which nest in Col. Sam Smith Park and Humber Bay Park East, often linger into November and begin returning in late February.  The pairs return to their usual territories--nests of sticks and vegetation built on floating wooden platforms provided by supporters to encourage breeding--already singing their raucous songs of love and challenge.  

Red-necked Grebe in winter (or basic) plumage, November. 

Red-necked Grebe pair in courtship, March. 

Taking over from the Red-necked Grebes once they leave, Horned Grebes are seen mainly in migration or while over-wintering on the great lakes; they breed across western Canada and the Yukon.  

Horned Grebe with stickleback, December. 

Horned Grebe moulting into breeding plumage, late March.

Petite Pied-billed Grebes can be found in the open water of harbours and bays in the winter.  

Pied-billed Grebe in non-breeding (basic) plumage, Humber Bay Park, late January.

This Pied-billed Grebe is almost in breeding (alternate) plumage, Col. Sam Smith Park, late February.  

Seen in winter in Toronto only rarely is the Eared Grebe.  This beauty stayed for a while in January, 2017, Col. Sam Smith Park.

Eared Grebe in winter plumage, January 

Canada Geese now overwinter along the lake shore parks in great numbers, similar to Mallards, no doubt aided by overfeeding and the proliferation of grassy lawns. They tend to be somewhat overlooked, but when a large flock is stretched out in a long "V" across the sky and bugling loudly, they are hard to ignore.  There are several subspecies of Canada Geese ranging across Canada, with the smallest now recognized as a different species - The Cackling Goose

Canada Goose

All three of our swan species can be seen along the lakeshore in winter, or flying overhead in small flocks.  Although native Trumpeter Swans, once extirpated from Ontario but now successfully reintroduced through captive breeding programs, are more common west and east of the west Toronto lake shore, they can be seen passing overhead or stopping for a rest and a meal.  Introduced from Europe, Mute Swans directly compete for the traditional nesting habitat of the Trumpeters.  

Trumpeter Swans are easily identified by their all-black faces, yellow wing tags and leg bands; they are carefully monitored.

Our other native swan species, the Tundra Swan, begins to migrate back toward the Arctic tundra in February-March, "staging" in large numbers around the northern Lake Erie bays, marshes and fields, and are occasionally spotted here in our parks. 

Tundra Swans usually show a yellow spot on the facial skin and hold their necks straight (not apparent in this preening bird from Col. Sam Smith Park, March 2012.  

Introduced Mute Swans have bright-orange bills and carry their necks in an elegant S-shape. This cob is already displaying in January.


We, the cold, are occasionally rewarded with rare or unusual species in winter, like the aforementioned Eared Grebe.  King Eiders, usually immatures, tend to show up in ones and twos every winter.  

Immature male King Eider, mouth of Humber River, November 2014. 

Immature male King Eider, Col. Sam Smith Park, January 2017.  This one stayed around long enough to start moulting into more adult plumage. 


Another rarity that tends to show up annually in winter is the Harlequin Duck, a bird of fast-moving water breeding on fast-flowing streams in northern Quebec and Labrador.  Some end up wintering on the great lakes and the Niagara River in low numbers.  

An immature male Harlequin hanging out with his Redhead pals, 2016. 

Immature male Harlequin Duck, 2016. 

Much less commonly reported, but a species that seems to have had an affinity for the west Toronto shores in the past, is the Western Grebe.  Strictly a western bird, it does rarely wander far off course--to thrill many admirers. 

Western Grebe, Col. Sam Smith Park, 2013. 

Although they are much more expected annually than the rarities above, some of the following species are always nice to see on a winter's outing along the lake. 

This pair of Green-winged Teal was a very pleasant surprise as they loafed on the ice at Humber Bay in March 2014. 

This handsome Northern Pintail stayed for a long time in the fall/winter of 2012/13, at Humber Bay Park East.

This bizarre sea duck, an adult male White-winged Scoter of the coastal waters, breeds farther inland than the other two scoter species and is the one most likely to appear on the great lakes during migration.  A mated pair stayed for a while at the stormwater pond at Humber Bay Park in 2014.

Ruddy Ducks are sometimes seen loafing far out on the bay at Humber Bay Park East.  Strangely, these tiny ducks adopt breeding plumage opposite most other species, wearing muted colours in winter.  A characteristic field mark is the tail held upright.   

Ruddy Ducks in December.  Adult males have the bright white cheek patch.

Immature male (L) and immature female Ruddy Ducks in January.

I have a friend or two who think that ducks and other waterfowl are (yaawwwn) boring.  True enough, when peering at distant rafts of indistinguishable ducks out on the lake on a cold, grey day, then maybe they can be boring.  But, every once in a while, conditions are just right for an up-close and personal--and very unboring-- look at some very brightly coloured birds in an otherwise stark winter landscape. 

Bird walks are arranged several times a year at Col. Sam Smith Park, advertised on the Friends of Sam Smith Park site. 
For information on birds of the Toronto lake shore parks and field trips:
Recommended field guide:  Sibley Birds East.

Gadwall drake preening after a bath