Two ring-necked ducks (Aythya collaris) swim together on blue water, with a NOW I WONDER logo in the bottom-right corner.

March 28 – My Nature Journal

March 28, 2026 Nature Journal

Ring-necked Duck

Aythya collaris

These two female Ring-necked Ducks were part of a larger flock of about five females on the lake today. Strangely, I didn’t see any males around anywhere.

Female Ring-necked Ducks look very similar to the females of three other species of waterfowl: Greater Scaups (XXXX), Lesser Scaups (XXXX), and Redheads (XXXX). Because of this, I can’t be absolutely sure that these birds were female Ring-necked Ducks but I believe them to be for a few reasons.

First, they each have a pale band around their bills, which is a characteristic not shared by the other female ducks.

Second, these ducks have a thin white eye-ring and a white line extending back from the eyes, which is another characteristic that distinguishes Ring-necked Duck females from other species.

Third, I’ve seen Ring-necked Ducks more often on this lake over the years than any other duck species (based on the presence of drakes, which are much easier to distinguish between species). I’ve seen scaups only once, and I’ve never seen a Redhead.

While I know this last reason isn’t exactly scientific, I think it’s OK to use “likelihood” to identify these birds in this case.

It can be a lot of fun to spot “vagrant” birds (wayward travelers that appear outside the usual range of the species; also called “accidentals”). But I like applying the quote from Dr. Theodore Woodward to challenging identifications: “When you hear hoofbeats, think horse, not zebra.”. Dr. Woodward was referring to the diagnosis of infectious diseases in humans.

But I think it can apply to ducks as well.

Two ring-necked ducks (Aythya collaris) swim together on blue water, with a NOW I WONDER logo in the bottom-right corner.
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Pair of ring-necked ducks swimming on blue water; top label shows'Ring-necked Ducks (Aythya collaris)' and NOW I WONDER logo at bottom right.
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Ring-necked Duck (Aythya collaris) perched on a log above a calm body of water, with brownish-gray plumage.
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American Wigeon

Mareca americana

Two American Wigeon ducks (Mareca americana), a female and a male, swim on blue water with a watermark in the corner.
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Hybrid Mallard

Anas platyrhynchos x Anas rubripes

Hybrid mallard × black duck standing at water’s edge; beige label at top with species name and NOW I WONDER logo bottom right
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Today’s Nature Journal Snapshot

Time of Day

Around noon-time through early afternoon

Setting

Large lake

Temperature

50° F / 10° C

Weather

Mostly sunny with passing clouds

Humidity

38%

March 28, 2025 Nature Journal

Brassy Blister Beetle

Lytta aenea

This Brassy Blister Beetle is one of many blister beetles crawling around the landscape, quietly living their own lives.

Like many animals, these beetles are completely harmless to humans—until we mess with them.

Blister Beetle manufacture a caustic chemical called cantharidin and release the chemical onto their exoskeletons through special joints when they’re physically threatened. Cantharidin causes bare human skin to blister on contact; thus the common name for this group of beetles.

As always, the best, kindest, and smartest approach to wildlife to is admire them from a safe distance only and never, ever pick them up or harass them in any other way.

This beetle may not look very threatening. But anyone who makes the mistake of picking up one of these insects with their bare hands will live to regret it.

Brassy blister beetle (Lytta aenea) crawling on a textured twig with a soft background, NOW I WONDER watermark visible.
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Brassy blister beetle (Lytta aenea) crawling on a twig against a pale sky; NOW I WONDER logo in the corner.
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American Crow

Corvus brachyrhynchos

American crow perched on a branch in a sunlit forest, with the scientific name Corvus brachyrhynchos displayed above.
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Flat Jumping spider

Platycryptus undatus

This mottled gray and brown spider is a Flat Jumping Spider.

Flat Jumping Spiders often live near humans, especially on weathered wood fences and buildings. Their coloration camouflages them beautifully against a variety of backgrounds; they’re practically invisible against tree trunks and weathered wood fences.

Thankfully for me, this spider clung to the side of a white building, where it stood out visually. I could see that it was missing a leg on both sides. It seemed to move around just fine on the vertical surface, but I wondered how well it would be able to hunt.

I suspect it will not live long. First, because jumping spiders launch their leaps on prey with their two back pairs of legs; missing the third leg on each side would be a major disadvantage for successfully attacking prey. And second, because its mottled camouflage failed against the white background.

If I could spot it so easily, so could something that eats spiders.

Flat jumping spider on a pale wall, labeled Platycryptus undatus; NOW I WONDER logo bottom right.
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Today’s Nature Journal Snapshot

Time of Day

Mid-afternoon

Setting

Suburban neighborhood

Temperature

76° F / 24° C

Weather

Sunny with high clouds

Humidity

27%

author avatar
Christine
Christine is the creator and author of NowIWonder.com, a website dedicated to the animals and plants that share our world, and the science that helps us understand them. Inspired by lifelong exploration and learning, Christine loves to share her knowledge with others who want to connect with wild faces and wild spaces.