Prothonotary warbler.

Prothonotary warbler, Rondeau Provincial Park, Ontario, Canada, May 21, 2019.
All you can eat bug buffet.
Protonotaria citrea For Prothonotary Warblers it pays to be bright. Males that are brighter yellow gain access to better nest sites than less colorful males, according to a study conducted in Louisiana. source -

Shirt-tailed bird.

Red-headed woodpecker, Rondeau Provincial Park, Ontario, Canada, May 21, 2019.
We have had four red-headed woodpeckers in and around our yard for several days.
At least two are nesting in the large trees just off our lot. Melanerpes erythrocephalus
Red-headed Woodpeckers are fierce defenders of their territory. They may remove the eggs of other species from nests and nest boxes, destroy other birds’ nests, and even enter duck nest boxes and puncture the duck eggs.
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"Carpe Diem"

Carp spawning in shallow water at a local conservation area. It was hard to tell, but they appeared to be about 2 feet long.

High water levels are bringing the carp close to a viewing platform.
Cyprinus carpio(?)
Blackburnian warbler, Rondeau Provincial Park, May 18, 2019.
Posing nicely on Tulip Tree Trail. Setophaga fusca
Tiny Blackburnian Warblers are strong fliers that travel between North and South America twice each year, so perhaps it isn’t surprising that they’re occasionally found very far off course. At times, “vagrants” have been recorded in Greenland, Iceland, Scotland, and the Azores off western Africa.
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Orange variant scarlet tanager.

Scarlet tanager, male orange variant, Rondeau Provincial Park, Ontario, Canada, May 17, 2019.
This bird was reported as a orange variant but I can't find much on the different colouration.
Feel free to comment as to the difference from the standard colouration - in molt, true variation and so on.
Piranga olivacea

Red-eyed vireo.

Red-eyed vireo, Rondeau Provincial Park, Ontario, Canada, May 15, 2019.
Vireo olivaceus The Red-eyed Vireo's magnetic compass guides migration between continents. But fat stores seem to influence migration paths when the birds encounter the Gulf of Mexico. Fatter birds head across the Gulf, while leaner birds hug the coastline or travel inland around the Gulf. Cloud cover also makes routes near land more likely. source -

Canada warbler.

Canada warbler, Rondeau Provincial Park, Ontario, Canada. May 13, 2019.
First spotted this one in the forsythia just outside the window. By the time I got the camera it was up in a tree.
Cardellina canadensis Canada Warblers fly more than 3,000 miles from their wintering grounds in South America to their breeding grounds in the United States and Canada. source -

The Skulker

Yellow-breasted chat, Rondeau Provincial Park, Ontario, Canada, May 14, 2019.
"Chats skulk silently in the shadows of dense thickets, gleaning insects and berries for food."
This one was true to that description. Icteria virens


Common Nighthawk, Rondeau Provincial Park, Ontario, Canada, May 13, 2019.
Found by William Doelman, enjoyed by many.
Chordeiles minor The Common Nighthawk’s impressive booming sounds during courtship dives, in combination with its erratic, bat-like flight, have earned it the colloquial name of “bullbat.” The name “nighthawk” itself is a bit of a misnomer, since the bird is neither strictly nocturnal—it’s active at dawn and dusk—nor closely related to hawks. source -