1. Duck and cormorant. Cormorant, - upright posture when on land. Longer neck and longer thin bill. Smaller head.
2. Song sparrow, field sparrow and house sparrow. I find the sparrows hard to identify but the app made it much easier plus having photos to refer to.
3. Red-winged blackbird, - foraging on the ground. Mallard duck feeding in water. Tree swallow feeding in flight.
4. Red-tailed hawk. Large, rounded wings and tail. Red tail. Gliding, soaring in circles. Common in Toronto and resident all year.