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9.0 Birds<br />

9.4.2.10<br />

9.4.2.11<br />

9.4.2.12<br />

9.4.2.13<br />

California Least Tern<br />

California Least Terns (Least Terns) reportedly nested within the Ports as early as the late<br />

1800s <strong>and</strong> have been observed within the harbor almost every year since monitoring studies<br />

began in 1973 (Keane Biological Consulting <strong>2008</strong>). Least Terns have nested at Pier 400 since<br />

1997 (Table 9.4-3). Nest numbers increased from approximately 565 during the 2000–2001<br />

study to 1,332 in 2005, <strong>and</strong> then declined to 521 in <strong>2008</strong>. The decrease in nest numbers is<br />

believed to be related to increases both in vegetation <strong>and</strong> predation at the Pier 400 nesting site<br />

(Keane Biological Consulting <strong>2008</strong>). During the 2007–<strong>2008</strong> <strong>surveys</strong>, Least Terns were only<br />

present in the Ports from May through July (Figure 9.4-1f), since they migrate south for the<br />

winter in September <strong>and</strong> do not return until April (Keane Biological Consulting <strong>2008</strong>). The<br />

majority <strong>of</strong> Least Tern observations during 2007–<strong>2008</strong> <strong>surveys</strong> were <strong>of</strong> individuals foraging or<br />

flying in the vicinity <strong>of</strong> their designated nesting site on Pier 400, although Least Terns also were<br />

observed foraging a<strong>long</strong> the outer breakwater <strong>and</strong> open-water areas <strong>of</strong> the outer harbors<br />

(Zones 1, 2, 3, 4, 5, 6, 7, 9, 14, 15, 19, 20, 21, 23) <strong>and</strong> within inner harbor basin <strong>and</strong> channel<br />

areas (Zones 25 <strong>and</strong> 28) (Appendix H-2). Least Terns foraged most frequently in Zone 8 (just<br />

<strong>of</strong>f the nesting site), Zone 6 (<strong>of</strong>f Pier 300 where the greatest amounts <strong>of</strong> foraging were recorded<br />

during 2001-2003 <strong>and</strong> previous <strong>surveys</strong>) also in Zone 1, Cabrillo Beach. Both Zones 6 <strong>and</strong> 1<br />

have substantial eelgrass <strong>and</strong> shallow water that have been shown in the past to support high<br />

levels <strong>of</strong> Least Tern foraging (Table H-22).<br />

Black Skimmer<br />

Black Skimmers were observed roosting on the s<strong>and</strong>y beach <strong>of</strong> Zone 2 (highest numbers were<br />

<strong>of</strong> 94 individuals during the January-B survey <strong>and</strong> 68 individuals during February-B survey),<br />

flying, or foraging in several areas <strong>of</strong> the outer harbors (Zones 2, 6, 13, 19 <strong>and</strong> 21) (Appendix H-<br />

2). This species nested in the Los Angeles Harbor from 1998 through 2000 but have not nested<br />

at the Ports since then (Table 9.4-3).<br />

Burrowing Owl<br />

No Burrowing Owls were observed within the survey zones <strong>of</strong> the 2007–<strong>2008</strong> study, although<br />

they were observed at the designated California Least Tern nesting site at Pier 400 California in<br />

both 2007 <strong>and</strong> <strong>2008</strong> (Keane Biological Consulting <strong>2008</strong>). The nesting status <strong>of</strong> this species at<br />

the Ports is unknown.<br />

Loggerhead Shrike<br />

No Loggerhead Shrikes were observed during the 2007–<strong>2008</strong> <strong>surveys</strong>. They were observed on<br />

four occasions in survey Zones 5, 25, <strong>and</strong> 26 during the 2000–2001 <strong>surveys</strong> (MEC 2002). The<br />

species has been reported as nesting in the Port area in previous years (ACOE 1984).<br />

9.4.3 Rare Sightings<br />

Several bird species rarely observed in Los Angeles County were recorded during the current<br />

<strong>surveys</strong>. One American Oystercatcher was observed on September 26, <strong>2008</strong>, resting on riprap<br />

in Zone 7 <strong>of</strong> outer Los Angeles Harbor. This species regularly occurs as far north as the west<br />

coast <strong>of</strong> Baja California, Mexico, <strong>and</strong> is a casual visitor a<strong>long</strong> the Los Angeles County coast<br />

where it <strong>of</strong>ten hybridizes with the more common Black Oystercatcher (Garrett et al. 2006). This<br />

species also was noted on three occasions during the 2000–2001 <strong>surveys</strong> on the outer<br />

breakwater in Zone 15 (MEC 2002).<br />

Four Black Scoters, a type <strong>of</strong> diving duck, were observed during the current <strong>surveys</strong>, on<br />

December 28, 2007 (2 individuals), January (1 individual), <strong>and</strong> February <strong>2008</strong> (1 individual). All<br />

<strong>2008</strong> Biological Surveys <strong>of</strong> Los Angeles <strong>and</strong> Long Beach Harbors 9–7<br />

April 2010

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