Showing posts with label 1997. Show all posts
Showing posts with label 1997. Show all posts

Monday, November 06, 2006

Brown-chested Martin

On this day in 1997, Paul Lehman was indulging in what has become a popular autumn Cape May pastime: sorting through flocks of swallows. Under optimal conditions, big swallow flocks can be found anywhere around the southern end of Cape Island; Lehman happened to be at the South Cape May Meadows. As he looked through a flock of 50 to 75 Tree Swallows, he spotted a martin. Any November martin would be highly unusual as virtually all Purple Martins leave the state by the end of September (Walsh et al. 1999). After a few seconds, the martin headed off toward Cape May Point State Park and Lehman returned home to check some books and get the word out to the locals. Further glimpses of the bird were had by various birders over the course of the afternoon, and the identification seemed to come down to a choice between Purple and Brown-chested Martins. The only previous confirmed North American record of Brown-chested Martin was a bird that was collected on Monomoy Island off Cape Cod in Massachusetts on 12 June 1983.

Lehman (1998) tells the story in detail: how after the first day of the martin's stay, local birders were left with the feeling that it was an odd Purple Martin. More research was done and out-of-state birders were consulted overnight. The locals were out in force the next morning, despite unpromising weather, and the martin was relocated on the west side of Cape May Point by the gingerbread church. The martin's companions included late Barn and Cliff Swallows, late Chimney Swifts and "as many as 5 Cave Swallows." The martin was determined to be a Brown-chested Martin and the twitch was on.

The martin was seen until 15 November, when it seemed to be in poor condition; it was not seen afterward and was presumed to have succumbed during the night. Before then, as many as a thousand birders may have participated in what one of my birding friends fondly remembers as "Martin Madness."

Lehman, Paul. 1998. Brown-chested Martin in Cape May!: First New Jersey and Second Documented North American Record. Records of New Jersey Birds 24:66-69.

Thursday, September 07, 2006

Eurasian Collared-Dove

On this day in 1997, Paul Lehman found a Eurasian Collared-Dove perched on top of a utility pole on Alexander Ave. in Cape May Point. Although word went out immediately, the bird had departed by the time the first chaser arrived ten minutes later (Lehman 1998). The bird could not be relocated.

The Eurasian Collared-Dove made an explosive colonization of Europe in the last century and now looks poised to add North America to its portfolio. The original source of the North American population is unclear, and the issue is muddied by birds that have escaped or been released from captivity (Romagosa and McEneaney 1999). What is apparent is that NJ birders need to be prepared for more records of these doves. At this writing, there are five accepted records for NJ: four from Cape May and one from Sandy Hook (Barnes et al. in litt.). There are two records each for May and September, and one for July.

Since doves may give only fleeting views, it's crucial for birders to concentrate on details of the wing pattern and undertail pattern to clinch this identification. Hybrids with Ringed Turtle-Dove need to be ruled out. Knowing the distinctive call of this dove may help, too.

When House Sparrows and European Starlings arrived in this country, many bird students of the day found them beneath notice because of their captive origins. As a result, we have a spotty record of the nature of their expansion across the continent. Hopefully we will not make the same mistake when it comes to tracking the Eurasian Collared-Dove.

Barnes, Scott, Joe Burgiel, Vince Elia, Jennifer Hanson, & Laurie Larson. In litt. New Jersey Bird Records Committee: Annual Report 2006. New Jersey Birds Fall 2006 issue.
Lehman, Paul. 1998. A Eurasian Collared-Dove at Cape May: First Sighting in New Jersey. Records of New Jersey Birds 24:5-6.
Romagosa, Christina M., & Terry McEneaney. 1999. Eurasian Collared-Dove in North America and the Caribbean. North American Birds 53:348-353.

Juvenile Curlew Sandpiper

On this day in 1997, a juvenile Curlew Sandpiper was identified by Bob Confer in a farm field near the Clarksville Sod Farm in Burlington County. Although the bird was present for a few days before this (Dasey 1997), looks sufficient for identification only came on the 7th. Ed Bruder was the original finder of this bird. The bird remained for one more day, 8 September, then departed.

This individual went on to become the first fully accepted record of the species for NJ. Although the state has many previous reports, the NJBRC elected to review only post-1996 reports of this species due to the difficulty of unearthing adequate documentation on so many reports after the fact (Halliwell et al. 2000). John James Audubon himself reported shooting two Curlew Sandpipers in spring 1829 at Great Egg Harbor in Atlantic County (Stone 1965); this is the first known report for North America.

The Curlew Sandpiper might be thought of as a "regular rarity" in NJ; most years have at least one report of the species. Most reports come from May with a secondary peak in July (Hanson 1999). In contrast to many vagrant species, most reports are of adults rather than immatures, a pattern that holds across the Northeast. It remains uncertain whether juvenile Curlew Sandpipers are overlooked because their plumage is far subtler than that of an adult in even partial alternate plumage, or whether there is a real difference in distribution of these age classes. A fuller discussion of Curlew Sandpiper distribution can be found in Hanson (1999). In any case, the Burlington County bird is noteworthy for its age, since there are no other known reports of juvenile Curlew Sandpipers for the state.

The Burlington County location is also noteworthy. Curlew Sandpipers are known for their site loyalty; Brigantine NWR in Atlantic County is probably the classic example of a location traditionally favored by the species. Part of this site loyalty may stem from adult birds repeating a migration path throughout their lifetimes, but there is no hard information on this. Most of the favored locations have been coastal ones. On the other hand, the appearance of such species as Pacific Golden-Plover and Sharp-tailed Sandpiper on inland sod farms demonstrates that rare shorebirds can show up in non-coastal locations.

Dasey, Ward W. 1997. 1996 Fall field notes, Region 4. Records of New Jersey Birds 22:14-16.
Halliwell, Tom, Rich Kane, Laurie Larson, & Paul Lehman. 2000. The Historical Report of the New Jersey Bird Records Committee: Rare Bird Reports Through 1989. Records of New Jersey Birds 26:13-44.
Hanson, Jennifer W. 1999. Curlew Sandpipers (Calidris ferruginea) in New Jersey. Records of New Jersey Birds 25:26-31.
Stone, Witmer. Bird Studies at Old Cape May: An Ornithology of Coastal New Jersey. Dover, New York, NY.