To: Mr. Aloha who wrote (35604 ) 3/12/2007 7:40:23 AM From: whenitgoesup Respond to of 78419 CBI drill results (Some of the Zinc intercepts were quite good) Colibri continues to expand Near-Surface Silver-Lead-Zinc Mineralization at Ramard Project, Sonora, Mexico VANCOUVER, March 12 /CNW/ - Colibri Resource Corporation has received assays from percussion drilling of an additional 13 percussion drill holes (RPD33 - RPD45) in a minimum 50 hole program on the Ramaje Ardiente (Ramard) Project in Sonora, Mexico. The Ramard Project is held by an option agreement to acquire 100% ownership of 8,419 hectares made between the Mexican subsidiary of Colibri, Minera Halcones SA de CV, and a private Mexican company. Exploration focus is on approximately 4 square km of skarn and hornfels in Paleozoic sedimentary rock adjacent to felsic porphyry intrusive rocks. The project covers the old "La Bronca" silver mines. All the holes were drilled vertically into skarn beds that dip 15 to 20 degrees thus drill intervals reported represent near true widths. This recent drilling has expanded the known zones of "manto" style high grade silver, lead and zinc to the west and northwest of prior drilling (see drill hole location map posted on www.colibriresourcecorp.com). The mineralized zone remains open in all directions (see News Releases of June 12, 2006, January 25, 2007, and February 12, 2007). Mineralization is present in part as oxide form and part as galena and sphalerite with pyrite. Several holes encountered difficult ground conditions and were terminated prior to reaching target depths. Drilling is ongoing. Results include: - RPD37 cut 453.9 gpt silver (13.3 ounces per short ton), 5.56% lead, 4.76% zinc over 3m between 19.5 and 22.5m depth. This intercept occurs within an interval 13.5m long between 13.5m and 27m that averages 126.8 gpt silver (3.7 ounces per short ton), 1.6% lead, 1.7% zinc - RPD42, cut 77 gpt silver, 1616 ppm copper, 0.92% lead, 11.42% zinc over 6m between 21 and 27m depth. This intercept occurs within a 21m interval that averages 28.2 gpt silver, 0.38% lead 4.53% zinc between 9 and 30m depth. - RPD44, cut 193.9 gpt silver, (5.7 ounces per short ton) 2.03% lead 2.06% zinc over 3m between 21 and 24m depth. This hole occurs directly along strike from holes RPD1, RPD2, RPD7, RPD8 and is thought to cut the same mineralized "manto" horizon, extending its apparent strike length to greater than 200m. average average Conc. Conc. average average location Silver Cu Conc. Conc. Hole UTM Total interval width gpt ppm Lead % Zinc % RPD33 518546E 18m 0-18m 18m 3.9 156 0.01 0.47 3285813N RPD34 518357E 27m 12-24m 12m 26.6 9.3 0.41 0.68 3285714N RPD35 518333E 30m 21-30m 9m 33 20 0.63 0.9 3285683N RPD36 518326E 31.5m 0-31.5m 31.5m 4 23.8 0.03 0.08 3285714N RPD37 518390E 30m 13.5-27m 13.5m 126.8 34 1.6 1.7 3285732N 19.5-22.5m 3m 453.9 37 5.56 4.76 RPD38 518398E 13.5m 12-13.5m 1.5m 2.7 29 0.08 0.61 3285761N RPD39 518379E 31.5m 12-13.5m 1.5m 10.4 11 0.17 0.83 3285739N 21-22.5m 1.5m 1.7 18 0.03 0.77 RPD40 518435E 18m No significant values 3285797N RPD41 518450E 24m 12-15m 3m 18.8 96.5 0.06 0.19 3285785N RPD42 518404E 30m 9-30m 21m 28.2 811 0.38 4.53 3285766N 21-27m 6m 77 1616 0.92 11.4 RPD43 518409E 31.5m 10.5-13.5m 3m 9.3 23.5 1.08 0.51 3285491N RPD44 518382E 31.5m 16.5-24m 7.5m 95.5 43.6 1.31 1.12 3285527N 21-24m 3m 193.9 87 2.03 2.06 RPD45 518381E 31.5m 21-24m 3m 36.3 743 2.04 1.41 3285501N Silver is reported as gpt, grams per metric Tonne, copper as parts per million, zinc and lead in weight percent. Gold is not usually assayed due to low concentrations anticipated in this geologic setting. Air track percussion drilling utilizes a surface air driven hammer with 2.25 inch wide bit and associated compressor. Samples are typically 5 kg of rock chips over 1.5m intervals. Each sample is split on site with a Jones splitter and half of the sample taken to Sonora Sample Preparation Lab, Hermosillo, Mexico, and then transported to Vancouver, B.C. by International Plasma Labs. The remaining half of the bagged sample is stored in Hermosillo for archival purposes. J.J. Irwin, B.Sc., Ph.D. is the qualified person under national instrument 43-101 and has reviewed this release. The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of the contents herein. Contacts Lance Geselbracht P.E. (604) 669-7591