Monday, March 30, 2020

Beach Birds

Earlier this month, my family and I spent a few days on Dauphin Island, AL.  Given the current pandemic situation, this is likely to be our last coastal trip in quite a while, so I thought it would be interesting to discuss yet more “tricky birds” that I observed (for more of that series, see here and here) and show some of the other avian life that can be found on the Gulf Coast.

This year’s visit was slightly earlier in the season than the one that we made last year—but only slightly.  Even so, the assortment of gulls, terns, and shorebirds on the public beach was fairly different from last time.  I saw only one Black Skimmer, and no Forster’s Terns at all.  But plovers, particularly Semipalmated and Piping, were abundant.  Small, brown sandpipers were also everywhere.  In the photo below, three species are depicted.  What are they?
The ten or so birds in the foreground (plus the one farthest to the left in the back) are chunky with drab, brownish upperparts, white bellies, grayish legs, and semi-long bills that droop at the tips.  If you remember the previous identification post, you may recall that these are Dunlins.  They spend the winter on the coast before migrating to Alaska and northern Canada for the breeding season.
Resting Dunlin
The remaining seven birds are all plovers, but you’ve probably noticed that two of them have very pale plumage compared to the rest.  The five darker plovers are Semipalmated Plovers, and the two paler ones are Piping Plovers.  You can tell that the Semipalmated Plovers have dark bands of feathers that completely encircle their breasts, while the Piping Plovers have incomplete breast-bands.  Both species have orange legs, unlike the Snowy Plover, which has grayish legs.  Like the Dunlin (but unlike the Snowy Plover), the Semipalmated and Piping Plovers do not remain on the Gulf Coast to breed.
Piping Plover
Even more species of shorebirds were to be found at the tide pools.  While I was walking beside one of these pools, I noticed this group of tiny sandpipers.  The two birds in front were obviously not Dunlins or Sanderlings, since they were much smaller in size and had brighter and more mottled plumage.  
The next photo, showing the beak and legs, makes everything perfectly clear: these birds are Least Sandpipers.  Their moderately short, slightly decurved bills; short, yellow legs; and warm-brown upperparts help to distinguish them from other shorebirds.  As you might guess, they migrate northward at this time of year, as well.
Least Sandpiper
As I’ve mentioned before, even though it can be overwhelming to stumble upon large groups of similar-looking bird species, being patient with yourself and going through a mental checklist of field marks for each bird will enable you to identify most or all of them without too much difficulty.  Don’t give up!

Of course, many of the birds that I saw on this vacation were the farthest thing from “tricky,” at least where identification was concerned.  This American Oystercatcher that I glimpsed through the railing at the Dauphin Island Sea Lab is a shorebird, but its bold black-and-white-and-brown plumage and almost clownish-looking red bill make it unlikely to be confused with any other species!  This particular individual, though, was “tricky” and wary in its behavior, making it difficult for me to get photographs.  Oystercatchers are year-round residents of the Gulf Coast, and they do indeed eat oysters.
American Oystercatcher watching from rock perch...
...and flying over the waves!  Notice its striking wing pattern.

Here are some other interesting but easy-to-ID birds: a Brown Pelican (standing on the rocks on the left), a Snowy Egret, and a Great Blue Heron.  The fog on this day, the 11th, obscured almost everything past the shoreline.  There are probably many cormorants, gulls, terns, and pelicans on the rocks farther out, but it’s almost impossible to tell.  Despite the visibility issues, there was something intriguing about seeing the beach shrouded in mist like this.
I can’t resist ending on this picture of a slightly miffed-looking Laughing Gull.  If you can, keep watching your local wildlife, and please continue to check for updates to the blog as we all move forward in this weird and stressful time.