Exactly; not having a playable wetland bird makes for a brutal start to the game.
I count 22 reasonably playable wetland birds for the first wetland bird.
Using combinatorics, more than half the time, we will not have any of those 22 birds in our starting hand.
But, 4 of them are tuck+draw birds that I would rather have in the grassland:
House Finch
Barn Swallow
Violet-Green Swallow
Purple Martin
These birds also require either a worm, or two food, or in one case, two worms. So, not exactly ideal (Though still great to have in the opening hand).
Three of them are "draw 1 discard one".
Black Tern
Foster's Tern.
Clark's Grebe.
Solid cards, but a much worse power than the Tree Swallow. Much easier to play, and a star nest though. Lower egg capacity.
Then there are the "tuck and lay eggs":
Bushtit
Red-winged blackbird
Yellow-headed Blackbird
Useful in their ability to use an egg for a second card, and then tuck one to get the egg back, scoring points and setting up another "Draw-2" turn. Can be an issue if both drawn cards are worth keeping. Sometimes we might prefer the Bushtit or the Red-winged Blackbird in a different habitat.
Then we have "draw 1". The Mallard. An excellent starting card. Gaining a card without using a resource.
"Draw 2 discard 1". Super strong ability. Being able to see 2 new cards, and keep them both (if desired) by discarding some other junk card.
Red-breasted Merganser
Pied-Billed Grebe
Ruddy Duck
Common Yellowthroat.
Great to have in the starting hand, but again, we're talking about 4 birds here. Most of the time we will not have one.
Everybody draws a card:
Spotted Sandpiper
Wilson's Snipe
Canvasback.
I am not a big fan of these unless I also have a tuck-and-egg bird. Otherwise, I might just be helping an opponent who otherwise is struggling to get cards, or, worse, has a tuck-and-egg.
Miscellaneous:
The Brant.
Rarely held in the opening hand, great if there are good cards in the tray, and if not, it's still a wetland bird worth 3 points, and provides 3 cards to use for gaining food or whatever.
And the "tuck and draw":
Tree Swallow
Ring-billed Gull
American Coot
Are the Coot and the Gull better? Yes. But to say that the Tree Swallow is catastrophically worse than the other two is rather dramatic.
Would I prefer a better card? Yes. Duh. Obviously. Unless I have the best card in the game, I always would rather have a better card. Thus, I see that as a bit of an empty statement.