Pine Warblers

Pine Warbler – one early winter day

Royal Botanical Gardens. Arboretum, Hamilton. ON. April 23 2023.   One of our routine bird-count routes takes us through a quiet grove of White Pines on the edge of an upland forest. Although major roads and rail lines are close it can feel very far from urbanisation here.  This is anything but a piece of virgin woodland though, a century or so ago it was horribly defaced; goodness knows how the first settlers used the land, but within living memory its marl topsoil was peeled off and sold as a soil conditioner. Today the scars of that industrial-scale abuse are hidden and a forest has returned.  It would be nice to believe that today’s grove of White Pines was planted as some sort of apology for the damage done, although I suspect a future timber crop was the more likely motive.  All of that preamble is just to set the stage for saying that it’s a good place to hear and sometimes see Pine Warblers.

Pine Warbler

I led a group around one of our transect routes today. Some of us were birders (we don’t move very fast) but not all and it wasn’t quite the cardio workout some of had hoped for.  Two low-flying Broad-winged Hawks had the birders excited and numerous Ruby-crowned Kinglets delighted everyone, except perhaps those who tried to photograph them.

The highlight of the day, as you might have guessed, came as we made our way through those White Pines. I was listening for Pine Warblers and it wasn’t long before we could hear one, then maybe two.  Pine Warblers are birds of the treetops, not the flashiest spring warbler, but if one should venture down it can be quite easy to pick out against the deep green of the White Pines. What they arguably lack in drama they make up for by being welcome early returnees, and they sing a distinctive gentle trill, the song I was listening for and that’s what made them My Birds of the Day.

White Pine

Eastern Whip-poor-will

Whip-poor-will caught in headlights

Burlington. ON. April 28, 2023. Those of us with a decent reputation as a birder periodically get asked for bird identifications. If you’re lucky it’s something well described, and that sustains your expert status, but often as not the description is just unhelpful. My late friend Anthony always threw the most obscure and improbable descriptions at me.  What, he asked, Flies like a bat out of hell, sounds and looks like an F16 firing its machine guns?” Fortunately, knowing from where he was writing, I was able to guess at Belted Kingfisher and with that he was happy.

Tonight around 5, my wife brought me a photo just received from a friend. ‘What is this?’ was the demand alongside a picture. I looked, and sat bolt upright.  It was either an Eastern Whip-poor-will or a Common Nighthawk; either way not the sort of bird most people would notice on your way to work, or at any other time. I wondered where this picture had come from? A clipping or maybe a clue from a quiz game.

A bit of enquiry revealed that it was at the friend’s work and it was still there, as it had been all afternoon. One of her colleagues happened to notice it through a large window and thought it was just a new fallen log where logs don’t belong.

So we raced over and I was lucky to photograph this Eastern Whip-poor-will trying to stay hidden. It was in a courtyard, at ground level and just outside a large window. There was no better spot to get photos than a bare three feet away, inside and out of the rain. I am certain this bird is a migrant who stopped here early this morning and found a secure daytime roosting spot. They are not uncommon where they breed (a little north of here and well away from urban areas) but they are rarely seen.

So this Eastern Whip-poor-will is my lucky, right-place-at-the-right-time, Bird of the Day.

Broad-winged Hawks

Broad-winged Hawk

Burlington. ON. April 21, 2023. There are a couple of moments in the yearly cycle, mid-late April and mid-late September, that go largely unheralded. This is when Broad-winged Hawks make brief, overhead, migratory appearances.  For us they’re just passing through.  They are birds of Central America during our winter, and northern nesters through our spring and summer. Those who have a summer residence, or otherwise spend time in northern Ontario’s lake-dotted landscape, would know the Broad-winged by its piercing whistle, but may not be very familiar with it by sight.

Their fall departure takes place in mid-September right after the passage of an early cold front.  If you happen to see it, the flight is a spectacle: hundreds of Broad-wings sailing high overhead as if on a smooth, straight, south-bound highway. It usually happens over a very few days and if missed well, there’s always next year

The spring migration is a little more relaxed but Broad-wings make a social event of it, passing through in the last couple of weeks of April; about now. They were my Bird of the Day today. I watched as swirling kettles of dozens circled up on warm-air thermals, spiralling until they’d gained enough height to slide off the top and drift northward in a long stream of ones and twos.

It’s difficult to get a decent photograph of one of these gatherings but here is the sight that stopped me in my tracks this morning.

That was the highlight, but this fresh spring morning delivered a few nice bird sightings. A pair of Pileated Woodpeckers took flight at my approach but one diverted to investigate a collapsing tree as a possible food source.

An Eastern Screech Owl has become something of a celebrity, I have noted it several times on these pages. Today it was out taking full advantage of the sun’s warmth and was encouraged to stick its neck out a bit.

Coming to the end of my long hike I checked what a week ago was an American Robin’s nest under construction. I had thought it rather too exposed to predators and a risky choice of nest site, so I was pleasantly surprised today to see the female apparently incubating a clutch of eggs. We’ll see.

Merlins

Female Merlin

Burlington. ON. April 15, 2023. In front of our house there’s a big old Norway Spruce. It’s huge, perhaps 80 feet tall and elegant in an overgrown spruce kind of way.  It drops an endless supply of cones and I sometimes worry that one of our riotous mid-summer thunderstorms might topple it. Atop the spruce, is a large twiggy nest, It was used successfully by American Crows a couple of years ago, and I think they’re using it again this year; certainly they’ve been hanging around a lot of late. Yesterday, through binoculars, I could see black tail-feathers extending beyond the edge of the nest as if a female crow was on the nest and laying or incubating eggs.

Behind our house there’s an equally tall Black Walnut, it’s bare right now but leaf-out is imminent. It’s not actually in our back yard which is just as well, Black Walnuts produce juglone, a natural herbicide that represses the growth of many plants, especially competition like ornamentals, that might otherwise grow beneath. As if that wasn’t reason enough not to encourage one, they drop hard, staining, billiard-ball-size fruit.  For the past three days, a pair of Merlins have been hanging around atop the walnut and I think they‘d like to evict the crows from the spruce.

Two days ago, I heard a brief crow-to-merlin squabble at the nest site. Just a squabble.  Merlins are known to be very territorial and aggressive in defence of their nests and young, but why invest time on a nest site apparently already in use? Are they waiting for an opportunity to evict the crows?

The male Merlin flies around and chitters loudly every now and then, but still he and his mate mostly just sit and watch. This morning the male swept straight to the nest, there was no sign of the crows and the female watched from high in the walnut.  Apparently, the drama has yet to play out fully.  Whatever the outcome, it is a pleasure to have two Merlins as resident Birds of the Day.

Male Merlin

Short-eared Owl

Haldimand County. ON. March 5 2023. I backed into an intriguing afternoon of birding when my household unexpectedly became a Covid-positive place.  I headed for the great outdoors, it seemed to be the better choice (Social distancing,  remember?) and decided to revisit fields where I’d watched Northern Harriers last December. I hoped to see them again and possibly catch a glimpse of Short-eared Owls who are known to be in the area.

It ended up being a rewarding and entertaining afternoon with Rough-legged Hawks, Northern Harriers and Short-eared Owls, all around me and sometimes quite close. They were hunting for rodents which were apparently plentiful in the large weedy field, most likely Meadow Voles. It’s not much of a life being a Meadow Vole: short and apparently amounts to just two things, making babies and being eaten by big birds of prey.

Rough-legged Hawk hanging in the wind

Rough-legged Hawks find and seize their prey by either dropping down from a high perch, or by high-level cruising punctuated by hovering, prolonged hanging in the wind. Other than Red-tailed Hawks who will ride an updraft, and hummingbirds I can’t think of another Ontario bird that hovers quite so purposefully.  Our American Kestrel does hover, rather briefly I think, certainly not as solidly or dependably as the very similar European Kestrel whose hovering is so competent and characteristic that one of its folk names is ‘windhover’.

Northern Harriers hunt by quartering the ground, always fast and usually low, often barely a meter up.  At the sight of a meal they stall, turn and pounce, it is sometimes difficult to follow their progress over a field; one moment in sight and the next minute vanished.

Northern Harrier passing over

Late afternoon, as dusk starts to gather, is when Short-eared Owls appear; they spend the brightest part of the day out of sight hidden within tall grasses and reeds. I watched two or three come from nowhere and check in with the harriers in what may have been an amicable hand-over. They, like the harriers though less methodically, range around open fields, hunting for those same hapless voles.  Two of the owls spent a while on high perches but after a while moved quickly, ranging far in floppy flight, sometimes gliding on rounded wings. Many authors appropriately describe their flight as moth-like.

Short-eared owl

Heading home driving along a lonely country road, a Short-eared Owl was all at once right  beside me.  It was zig-zagging to examine a meltwater-filled roadside ditch and close enough that I like to think we made brief eye-contact.  It was instantly My Bird of the Day.

Although I enjoyed time with three notable birds of prey there was more: a solitary Bald Eagle trudged overhead on its way to Lake Erie for duck dinner perhaps, a small flight of Tundra Swans passed over, calling softly amongst themselves, they are my favourite sign of spring;  and a Killdeer a common bird for nine months of the year but notable today for being the first of its kind this spring.